This Winchester manufactured early variation flat type trigger spring is for the model 1906 slide action rimfire rifle with a serial number circa 170,000 or lower and is in very good condition with light wear. (file photo)
Note: Winchester model 1906 takedown slide action rifles with the following serial numbers have been observed with this part:
Below 100K: 81649
100K: 162122, 163781 & 167513