So maybe even the modern Model 20's start forward of the hilt at about 3/16" thickness then???

Anyone have a newer Model 20 nearby to measure?

The main reason I'm thinking these older Model 20's were 3/16" thick stock is because it looks identical to my newer Model 26 Pathfinders where the blade exits the front of the hilts. No "hint" it started life as 1/4" stock......

Also,....no matter what the thickness, I think the older style "straight" Randall Made stamping is more appealing if you're taking the original grind lines down.