This Marlin manufactured second & third variation trigger guard assembly with two mounting holes is for the Glenfield model 60 semi-auto rimfire rifle and is in very good condition with light wear.  (file photos)

Note: Firearms with the following years of manufacture and serial numbers have been observed with this part:

1973: 27106155 & 27274660

1974: 26360250

1975: 25359287 & 25404905

1976: 24498679, 24528522 & 24589170

1977: 23441980, 23485890,  23512316 & 23558978

1978: 22330018, 22389946, 22439159 & 22457946

1979: 21312564, 21418578, 21448907 & 21459280

1980: 20360112, 20385176, 20413309 & 20643810

1981: 19355124

1982: 18310645