With the exception of the Texas Belle which is a product of the early-20th Century, most ivories known to us are from the 19th Century.

There is a section in Antique Gambling Chips (Recent Creations & Suspected Fakes) that depicts about 130 different example currently known to us.

Should anyone ever come across pieces that you're not too sure of while out in the field, feel free to call me TOLL-FREE at 1-800-844-3397...so we can both be confused. <g>

JB