This Marlin manufactured magazine tube stud is for the model 1892 lever action rimfire rifle and is in very good condition exhibiting a grayish brown patina with light wear.  (file photo)

Note: Marlin model 1892 and 92 lever action rimfire rifles in 22 caliber with the following serial numbers have been observed with this part:

Marked 1892:

Marked 92: 400471 & 406506