It could be High Standard if its a handgun
HI Standard
Stampin' Up has their own factory in which they manufacture their own stamps in Kanab, Utah.
Unknown.
No sn data available.
0-70 USD or so
Scuba tanks are marked with different stamps. Some of these stamps are put on the tank at manufacture and some are added periodically when a cylinder is tested. The main stamps put on the cylinder at manufacture indicate the manufacturer, the volume of the cylinder, the working pressure and the test pressure. The test stamps are put on the cylinder by testing stations to indicate that the cylinder is safe to use. These test stamps have the date and a testing station stamp.
Write to the Manufacture or go online to the gun maker and request a manual.
carbon
No
Blue book of gun values
For Colt, go to proofhouse.com
Yes.