When I designed the Gambler back in the early 1980s my thought was a symmetrical blade profile along the lines of a model #2 or model #24 but with a top false edge. Each one is, of course, made by hand and each one is different.
Occasionally the false edge can have a more angular profile rather than the rounded, symmetrical point. You can see variations in the four large Gamblers below. The handle materials from left to right are Snakewood, Stag, Koa and Ivory.