John R:
I too am looking for such an item as recently I acquired a frame only No 2 Mk I from a shop on the BC Coast anbd it still had the strut literally glued in place with congealed grease -- so an original hammer would be a real bonus to complete the assembly. Assembling a complete revolver has so far cost me about 100 plus bucks and a bottle of Scotch that was older than most of the women I have dated --- but it is certainly a labour of love...
My 3" bbl No2 MkI does just fine at 15yards as recoil is soaked up by a massive frame and hand filling grips

roconn