See if this helps http://stevespages.com/pdf/marlin_60.pdf
The Glenfield MOD. 60 (.22 cal L.R.) by Marlin Firearms Co. is a semi-automatic.
The AB prefix to your serial number indicates that your glenfield was made by the marlin firearms company in 1966.
Glenfield firearms were manufactured by Marlin (many were marked with both names). Cotter & Co was one of the retail hardware stores that sold Glenfield guns and some of them were stamped with the store name.
Glenfield,which was made by Marlin Firearms Company made a bolt action .410ga shotgun from 1956-1965.This was the marlin model 59 which is the same shotgun as your Glenfield model 60.
Marlin made the Glenfield firearms, not Winchester.
Your marlin 336sc(standard carbine) was made by the marlin firearms company in 1950.
yes they did
Numrich gun parts, look under Marlin/Glenfield parts list
I found the value of a Marlin/Glenfield (similar serial) to be at about $2,700. I'm looking too, but that's the price I was able to find.
50 to 80 dollars
Your marlin model 336 RC(regular carbine) was made by the marlin firearms company in 1948 with the E prefix to the serial number that you provided.
About $150.00