Caring for an Antique or Bone Domino Set

Older domino sets are often built from very different materials than the injection-molded plastic sets sold today — bone backed with dark wood, carved ivory, dense ebony, or early Bakelite from the first half of the twentieth century. Each of those materials ages differently, and treating an antique set the way you'd treat a modern one is one of the fastest ways to damage it. Here's how to identify what you have, handle, clean, and store it properly, and confirm the set is actually complete before doing anything else with it.

Identify the material first

Before cleaning anything, it's worth working out roughly what you're holding:

• Bone-and-wood sets are common from the 19th and early 20th centuries — a thin bone face pinned or glued onto a dark wood (often ebony) back. Look for a visible seam between a pale, slightly porous face and a darker wood backing along the tile's edge.
• Ivory sets are rarer, heavier, and denser than bone, with a smoother, more uniform grain and no visible seam between face and back — the whole tile is one material.
• Ebony or other dense hardwood sets are typically a uniform dark color throughout, sometimes with contrasting inlaid pips rather than painted or drilled dots.
• Early Bakelite sets, generally from the 1920s-1950s, feel notably heavier and cooler to the touch than modern plastic, often with a faint camphor-like smell when rubbed, and can range from cream to butterscotch to near-black in color, sometimes with visible mottling.

If you're not sure and suspect the set might have real ivory content, it's worth researching your local regulations before selling, shipping, or transporting it across borders — ivory trade rules vary significantly by country and have tightened considerably in recent decades.

Weight and sound are two quick, non-destructive checks worth doing alongside a visual inspection. Bone and ivory both feel distinctly heavier for their size than modern plastic, and tapping two tiles together produces a denser, higher-pitched click than the duller plastic-on-plastic sound of a contemporary set. Neither test is definitive on its own — they're a first impression, not a lab result — but combined with the visual seam check above, they narrow things down quickly. If you still can't tell after all three checks, it's reasonable to treat the set as if it were the more delicate material until a specialist confirms otherwise; the cost of being overly gentle with a set that turns out to be sturdy Bakelite is far lower than the cost of being rough with one that turns out to be genuine bone or ivory.

Cleaning: less is more

The single biggest risk to an antique set is over-cleaning. Bone and ivory are both porous to some degree and can absorb moisture, which leads to warping, cracking, or yellowing over time. A few rules of thumb:

• Dry-clean first. A soft, dry microfiber cloth removes the vast majority of surface dust and grime without introducing any moisture at all. Try this before anything else.
• If you must use moisture, use almost none. A cloth that's been barely dampened and then wrung out until it feels dry to the touch is about as far as most conservators recommend going on bone or ivory. Never submerge a bone-and-wood tile, since water can loosen the glue bond between the two materials.
• Avoid solvents and commercial cleaners entirely. Alcohol, ammonia-based cleaners, and most all-purpose sprays can strip finish, dull the surface, or react badly with aged adhesives. If a set genuinely needs deep cleaning, that's a job for a specialist familiar with organic materials, not a household product.
• Bakelite is comparatively hardier but can still discolor or develop surface crazing (fine cracks) if exposed to strong heat or direct sunlight for extended periods, so the same gentle, dry-first approach is still the safer default.
• Work tile by tile, not the whole set at once. Cleaning one tile fully before moving to the next means a mistake — too much moisture, a cloth that turns out to be dirtier than expected — is contained to a single piece rather than repeated across all 28 (or 55, or 91) before you notice.

Storage matters as much as cleaning

How a set is stored between games does more to determine its long-term condition than almost anything else:

• Stable humidity. Big swings in humidity are harder on bone and wood than any single humidity level, since repeated expansion and contraction is what causes warping and cracking over years. A consistent indoor environment, away from basements or attics with fluctuating conditions, is ideal.
• Out of direct sunlight. UV exposure yellows bone and ivory and can fade painted or inlaid pips over time. A closed case or drawer beats an open display shelf in direct light.
• A snug, padded case. Loose tiles rattling around in an oversized box wear down edges and corners over repeated handling. The original fitted box, if you still have it, is usually the best home; a felt-lined replacement case is a reasonable substitute.
• Keep the set together as a unit. It's tempting to display a few striking tiles separately and box up the rest, but a set split across a display shelf and a storage box is much easier to lose track of — and much harder to notice a missing piece from — than one kept together.

Checking a set is complete

Before you do anything else with a newly acquired antique set — clean it, display it, or reach out to a specialist about it — it's worth confirming how many tiles you actually have. Older sets, especially ones that have changed hands a few times, are frequently missing one or two pieces without an obvious gap. Count what you have and compare it against the expected total for the set size with the Tile Inventory Tracker; a double-six set should hold 28 tiles, a double-nine 55, and a double-twelve 91 — the full list of standard sizes is on our Domino Set Reference if you're not sure which size you're holding.

Counting alone tells you how many are missing, not which ones — and for an antique set, that distinction matters more than usual, since a specialist replacement piece (hand-cut to match aged bone or ebony) is a very different undertaking from a generic plastic top-up tile. If a count comes up short, our guide to tracking a set and what to do about a lost tile walks through narrowing down the exact missing piece by elimination, which is worth doing before contacting anyone about a replacement.

Handling during play, not just storage

An antique set that only comes out for the occasional game deserves a bit more care during that game than an everyday plastic set would. A felt-topped table or a folded towel underneath the layout softens the repeated tapping of bone or Bakelite against a hard surface, which over many games is exactly the kind of small repeated stress that eventually chips an edge. Encouraging players to place tiles rather than slap them down — a common flourish with modern sets — is worth mentioning before the first game with a set you'd rather not see damaged.

Documenting a set for the future

Whether or not a set turns out to have real monetary value, a few minutes of documentation pays off later. Photograph the full set laid out in order, close up on any maker's marks, engravings, or a fitted case's original label, and note anything you already know about its history — where it came from, roughly how old it's believed to be, any prior repairs. If the set is ever appraised, insured, or passed on to someone else, that record is far more useful than a memory of "it's been in the family a while." It also gives you a baseline photo to compare against later if you ever suspect a tile has gone missing or been swapped.

Transporting a set safely

Moving an antique set — to an appraiser, a new home, or just across town for a game night — deserves more care than tossing the box in a bag. Wrap the set (still in its case, if it has one) in a soft cloth before placing it in a rigid outer container; a set with no fitted case benefits from tiles individually separated by cloth or tissue rather than left to knock against each other loose. Avoid a car's trunk or any space prone to temperature swings for anything beyond a short trip, for the same humidity-and-heat reasons covered under storage above — a hot trunk on a summer day can undo a lot of otherwise careful handling in a single afternoon.

When to bring in a specialist

If a set appears to be genuine ivory, shows significant cracking or separation between bone and wood backing, or simply seems old and well-made enough that you suspect real value, it's worth having it looked at by an antiques appraiser or conservator before attempting any cleaning beyond a dry cloth. A set that's survived a century in reasonable condition is worth a cautious approach rather than a well-meaning cleaning that does more harm than good. When in doubt, the safer default at every step — identifying the material, cleaning, storing, or deciding whether to call in outside help — is the one that changes the least about the set until you're certain.