Is it considered a personal chip if the guy has his initials on it for his home game?

Then these are even earlier personal chips -- my auctions:

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1928 Agua Caliente,Tijuana,Baja CA,Mexico:owner chip JC

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150468182910

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1928 Agua Caliente,Tijuana,Baja Calif: owner's chip BL

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150468214560

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Robert
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Eli Wallach taking bets on Marilyn Monroe's ping pong game in "The Misfits" (1961). (I'd like some confirmation about that scene.) Wallach is grabbing cash, and Monroe has a ping pong paddle in her right hand.
http://www.antiquegamblingchips.com/stillsHollywoodStarsGambl.htm