The orig was built on the lever action Model 93 action,,the square bolt rifle Drm50 refers to.
They elongated the loading port for the 2.5" 410's. The shotgun would function with then available 2" loads also.
The forend is a deep heavy hand filling piece much different from the rifle style and has a finger groove running lengthwise on each side.
The magazine tube is larger in dia than the standard Model 93 tube and is 1/2 mag style.
The Model is simply 'Marlin 410' and that is what is roll marked onto the upper tang with Marlin (over) 410.
22" and 26" bbl available in the cataloged Field edition from 1929 to '32.
A Deluxe model was available so say the experts..(checkered deluxe wood, forend w/o the finger grooves. Engraving most likely if you wanted it.)
Deluxe models have shown up but were never cataloged or listed on price sheets.
Makes me wonder a bit with all the 'questionable original' stuff I've seen.
But the factorys would certainly do most anything the customers would pay for back then. A factory letter can prove a lot.
The Field gun was a give-a-way at that time with the purchase of 4 shares of Marlin stock @ $25/share. That's noted in Brophy's book on Marlin Firearms.
Two ser# series. One w/o any prefix,,the other with a 'U' prefix.
Marlin thought about making another trip down L/A shotgun lane in the late 50's. They experimented with using an enlarged LeverMatic action and the bbl from their Bolt action shotgun (Mod 55?).
Since the Levermatic design was one Marlin had bought from Kessler Arms in Silver Creek NY in the early 50's in the form of a shotgun, it wouldn't have been a big leap to mfg it would seem.
But it never left the Marlin R&D Dept drawing boards as a LeverMatic Shotgun as I understand it. Just the rifle designs emerged.
...The world would just not have been the same with Arnold and a LeverMatic riot gun.