Hi-Standard made multiple models of pistols. Some had slide locks.
Good 22.
50-350 usd
The High Standard Sentinel series revolver was first introduced in 1953. It was produced by High Standard Manufacturing Company and became known for its unique design and versatility. The Sentinel series includes several models, primarily chambered in .22 LR. Production of the Sentinel continued into the 1970s.
Automatic transmission fluid would likely cause a standard transmission to overheat and wear the gears at a high rate.
Go to http://www.krausebooks.com/category/firearms_knives and purchase the Gun Digest Assembly/Disassembly book for shotguns. The Flight King is in there.
High Standard, Model A1041
The High Standard W 102 Longhorn revolver with serial number 1127892 was manufactured in 1971. High Standard produced these revolvers primarily during the late 1960s and early 1970s. For precise dating, it's always best to consult the manufacturer's records or a reputable firearms reference guide.
Automatic High was created on 2002-07-22.
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
In the 1970s
length of the slide= 47.10 feet
The High Standard Model 104, with serial number 1333438, was produced in the early 1970s. High Standard manufactured these pistols from 1950 to the late 1980s, so this specific model would likely be around 50 years old, depending on the exact year of manufacture. For precise dating, you may need to consult a detailed serial number guide or contact a firearms expert.