Ok so thanks to everyone for in advice so we as a group agree that it is a model 2 not the problem is I can't seem to find a mainspring /hammerspring on eBay my question is this comes up on under 38 top break da would these parts work or am I still looking at the wrong gun still

38 Double Action Revolver Schematic | Numrich

And just to Clarify my understanding was dude paid 50ish bucks for it