Make: Marlin

Model: Mark 1

Serial Number: 38510

Year of Manufacture: 1961-1963, C&R

Caliber: 12 Gauge

Action Type: Pump Action, Tubular Magazine

Barrel Length: 30"

Choke: Fixed Full

Sights / Optics: The front sight is a brass bead mounted on a serrated ramp at the muzzle. The top of the receiver is serrated to reduce glare while aiming.

Stock Configuration & Condition: The shotgun has a two-piece wood stock configuration featuring a straight comb, semi-pistol grip, and a smooth forend. The buttstock is fitted with a plastic buttplate, which is cracked. The wood retains a strong finish with only light handling marks present. The LOP measures approximately 14" from the front of the trigger to the back of the buttplate. The stock rates in about Very Good overall condition.

Type of Finish: Blued

Finish Originality: Original

Bore Condition: The bore is bright. There is no visible erosion, only some light stubborn fouling. In this writer’s opinion, the bore rates 9.5/10.

Overall Condition: This shotgun retains about 95% of its metal finish. The balance of the finish shows light operational wear. There are minimal handling marks, and the finish remains strong. The screw heads are sharp, and the markings are clear and legible. Overall, this shotgun rates in about Very Good condition.

Mechanics: The action functions correctly. We did not fire this shotgun. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories: None

Our Assessment: The Marlin Mark 1 was produced between 1961 and 1963, making it a relatively uncommon pump-action shotgun. Built to compete with other slide-action shotguns of its era, the Mark 1 is known for its reliability and smooth cycling. The "JM" marking on the barrel confirms that it was manufactured in Marlin’s original factory, which is a detail many collectors appreciate.

This example is in very good condition, retaining about 95% of its original blued finish with only light operational wear. The bore is bright, and the wood stocks show only minor handling marks, though the plastic buttplate does have a crack. The 30" barrel with a fixed full choke makes this a solid choice for waterfowl or trap shooting.

For collectors of Marlin firearms, this Mark 1 is an excellent piece to add to a collection. Its limited production run and classic pump-action design make it a valuable and functional shotgun. Whether you're looking for a reliable shooter or a well-preserved vintage piece, this Marlin Mark 1 is a strong contender.