5-shot gun or 6-shot gun? Click-adjustable rear sight, or notch in the frame non-adjustable rear sight? Blued finish, nickel-plated finish, or stainless steel? 2-inch barrel, 3-inch barrel, or something else? Flat, kind of rectangular cylinder release with ridges, or a more rounded release with checkering? Round-butt grip frame or square-butt? Caliber .38 Special, .38 S&W, some kind of .32, or something else (should be stamped on the side of the barrel)? Photo(s) of the gun?
Here are some examples of the more common variations of the model 36:
Older 2-inch round-butt flat-latch model 36:
Model 36 "Chief's Special" Smith & Wesson .38 Special Snubby
Newer 3-inch square-butt model 36:
Item:9184542 Smith & Wesson S&W Model 36 3 inch square butt w/factory box For Sale at GunAuction.com
"Placement is power" -- seen in an article by Stephen A. Camp
(RIP, Mr. Camp; you will be remembered, and missed)