1939-1942
GunParts catalog lists that particular model as being produced by High Standard, but the exact model is unknown, but I suspect it may be a High Standard Supermatic deluxe (if it is an automatic) or a flight King model (if it is a pump). High Standard yes, but specifically a J.C. Higgins Model 10 ... http://www.histandard.info/manuals/sears/bashotguns/index.html
This model came out in 1958,and was produced until 1970.
The model # 107 Series lifespan was from late 68 to late 72 Serial # Range 2,030,000 - 2,330,000
about 950.oo cash.
High Standard
1954 And produced through 1956. Replaced by the 583.1101 (High Standard Model 11) in 1957.
The High Standard Model 103, which is a .22 caliber semi-automatic pistol, was produced primarily in the 1960s. Specifically, the production of the Model 103 began in 1965 and continued until around 1973. The serial number you provided, 1966594, suggests it was made during that time frame, likely in the late 1960s.
This model was made between 1947 and 1950. This low serial # was probably produced in '47 or '48. I'm looking for more precise info myself.
No such Model name.
Yes, they made that model
Any of the Military grip models will take a magazine with a longer floor plate. For example: http://www.ammoclip.com/H/high_stand_military_grips.htm
SUPERMATIC TOURNAMENT MILITARY - $125-550 - depending on condition, if it has "MODEL 106"/"MILITARY" on it, a few dollar more, but without more detail or serial numbers...