Your gun was made in 1903. The gun is a Quality VH, the entry-level Parker Bros. shotgun at that time. From the 1901 catalog that introduced the option of automatic ejectors, which your gun does not have.
Quality V.H. Ejector Catalog.jpg
Note that price of $50 is the "List Price." The actual Net Price was $37.50.
If your gun is a 12-gauge, the 12-gauge VH-/VHE-Quality is the most common Parker Bros. shotgun made with some 51901 made. This is not to say they are not great guns for hunting and shooting, but they don't draw a lot of dollars unless in exceptionally high original condition or sport a lot of the options offered later in production.
Threaded Mode