Here are some of the better ones, from my incomplete web site. Most engraved chips are common, not worth much. In broken sets especially, a lot of one chip is worth less-per-chip, than buying one or two.
http://www.antiquegamblingchips.com/poker_sports.htm
http://www.antiquegamblingchips.com/poker_birds.htm
http://www.antiquegamblingchips.com/poker_animals.htm

Robert