Your Model 62A was manufactured in the month of May, 1940.
Gun shop, gun show, pawn shop, on line auction site such as auctionarms or gunbroker.
The Wards Westernfield Model 62 .22 single shot rifle is a Stevens Model 83. Parts can be located @ Numrich Arms Corp. (egunparts.com)
The Wards Westerfield Model 62 single shot .22 rifle is a store brand marked Stevens Model 83. The Stevens model 83 was mfg'erd from 1935 to 1939.
What is the value of a Model 62 Winchester .22 rifle with serial 21072
They can be had new for $270.
Introduced in 2000.
The Model 62 was produced from 1932 to c.1938, when the model designation was changed to 62A.
50-300 usd
Impossible to answer without knowing the maker.
15741 manufactured according to ref atached http://books.google.com/books?id=iRb3ioTApJ0C&pg=RA2-PA299&lpg=RA2-PA299&dq=marlin+rifle+model+62&source=web&ots=JK4LD2QsAX&sig=b_vIm2aA12wEO-ADnzrwWkY55jM
No published sn data.