Steve, you asked for info on your Crest & Seal "EC" chip. I can't tell you the
name of the person or club, nor the location. I CAN tell you what is on the
labels from the 2 orders from USPC, who made the chips. First label, with
three colors, Navy (like yours), Dk Brown, Lavender, on 3//20/28. Shipped
to Aladdin Specialty Co., Chicago (a distributor--they featured inlay roulette
chips with Aladdin's Lamp on the chip--See Dale Seymour's, "Antique Gambling
Chips".)

The second order & label states, "Repeat order; To B.C. Wills, 1929,
Made for A.S. Co.; Special permission from A.S. Co. EC Crest or
Seal." This order had 4 colors, pink, yellow, white & black.
I know this doesn't give you all that you wanted, but I hope that it's more
than you had.
Allan