I think rhmc24 takes the cake for having owned his the longest.
I find it interesting how the hammer and front sight styles overlap. Some guns are round sight/Speed Hammer, some are ramped/Speed Hammer, some are round/modern hammer.
I have a couple but nothing that hasn't been seen before. I guess the true "pre10" would be an M&P from 1946 to 1957 so these will fit: