This Winchester manufactured wire type trigger spring is for the model 1906 slide action rimfire rifle 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:
300K: 312061, 333347 & 359560
400K: 405314 & 442486
600K: 611843 & 655997
700K: 785298