More information available. It has a serial number 66701 on the handle under the grip on the left side.
It is rare to find a modern firearm (last 50 years or so) that has NO markings at all. It is possible that those markings may have been removed from a modern firearm. Without some additional information, such as the type of firearm, we do not have enough information to offer a real answer.
Start by posting a question here with ALL markings on the rifle. There IS no information available for some brands.
Serial number, identification of the arsenal which manufactured them, many also have the Nazi eagle. Additional markings by forces which captured them can be found, as well as additional markings from when West Germany was able to reestablish its military in 1953.
A graduated cylinder is available in a variety of markings. They can range from increments of 0.001 to 1.0.
portion markings,banner markings, classified authority block
I suspect you are confusing a patent date marking with a model number. What are the other markings on the gun? email@example.com OK. The best we can do is narrow it to the 1930's. No factory records exist. This was after the Savage takeover, and Stevens was still producing guns in the Chicopee Falls plant. They used the Springfield name as a value-brand.
Browning's web site has the current information.
Use Control Markings
Not enough information provided. Need description of the revolver, including any and all markings on barrel and receiver, type of action and model if available.
No way to answer with the information provided.
There will be at lease three and on some conduits additional information. There will be the manufacture's name, type of material the conduit is manufactured from and the diameter size of the conduit. For example Scepter PVC 100 mm (for American customers 4") conduit.
What are the markings on the pistol?