The list at the bottom is what Armin emailed me on Duke chips w/ prices. He shows a Smoke Shop in PR, a Card Club in Fresno and also a Duke's Casino in Fresno. I don't have anything from the 3rd one. He also says the pink unicorn 50 cent is from there. I have it and it says Card Club Fresno. He also doesn't list the smooth chips we're are refering to.
I believe they are from Robles (Dukes Smoke Shop). Also click this link.. I would put a price a little higher on the GFB's than the LC's as they seem to be harder to find.

http://cashcoinconnection.com/USACAC/D.pdf

This is from the "Richard Edward Staeffler Memorial Calif Card Room Ref #3" on John Kallman's wesite. He shows the GFB as Duke's Smoke Shop in PR, Calif. 1931-1972.

DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $0.00 MUSTARD PLAIN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $0.00 NAVY PLAIN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $0.00 BLUE LRGCRN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $0.00 WHITE LRGCRN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $0.00 RED LRGCRN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES 50¢ RED/4GREY LRGCRN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $1$ BLUE/4TAN LRGCRN-HS $15
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $5$ YEL/4RED LRGCRN-HS $18
DUKES (DUKE'S SMOKE SHOP) PASO ROBLES $25$ BRN/4GRN LRGCRN-HS $30
DUKE'S CARD CLUB FRESNO $1 GREY/4RED4BLU CHIP-CO $7
DUKE'S CARD CLUB FRESNO $2.00 GREEN/4ORG CHIP-CO $8
DUKE'S CARD CLUB FRESNO $2 GREEN/4ORG CHIP-CO $8
DUKE'S CARD CLUB FRESNO $3 BLU/4ORG4BLK CHIP-CO $10
DUKE'S CARD CLUB FRESNO $5 RED/2GRN/1GREY CHIP-CO $15
DUKE'S CARD CLUB FRESNO $20.00 PUR/2WHITE CHIP-CO $15
DUKE'S CARD CLUB FRESNO $20 PUR/2WHITE CHIP-CO $30
DUKE'S CARD CLUB FRESNO $100 BLK/2GREY2WHT CHIP-CO $130
DUKE'S CASINO FRESNO 25¢ ORG/6BEIGE LANG-HS $20
DUKE'S CASINO FRESNO 500 YEL/6GRAY LANG-HS $20
DUKE'S CASINO FRESNO 50¢ PINK UNICORN-HS $12