[REPEATER]

here ya go. The fact that you mentioned there is no model number or serial number on your rifle makes me wonder if you might have a Marlin Model A1 .22 semi-auto. Does your rifle have some stamping on the left side of the barrel below the rear sight: .22 LONG RIFLE ONLY-SMOKELESS GREASED If so it is the Marlin A1,as this is the only Marlin model that had this stamping. As far as a clip you can use a clip for a Marlin Model 80,25 etc. "Old Style" clip with some minor modifications to the clip.

The Model A1 was an improved version of the Model 50, manufactured from 1936-40.* The Model A1 fired from a closed bolt, and used a 24-inch barrel.* The safety catch was moved to rear of the tubular receiver.* The original Model A1s used a stamped steel trigger and trigger guard, and used only a spring-leaf and elevator-type rear sight and a hooded bead front sight.
The Model A1 was modified in 1941, though production stopped near the end of 1941 (as Marlin was primarily making weapons for the US military during World War 2), and did not pick up again until late 1945 and continuing until late 1946.* Modifications included moving the safety again – it was now a radial safety on the right rear side of the receiver.* The trigger guard of this modified version was made of plastic, and the stock was re-shaped, with a deeper pistol grip wrist and a rounded fore-end.* Other variants included the Model A1E (built from 1936-41 and 1945-46), with a simple adjustable aperture rear sight; the Model A1E (built in 1941 and from 1945-46), with a different stock that had a fluted comb and a beavertail fore-end, as well as the aperture rear sight; and the A1DL, which had both an aperture rear sight and a target-type peep sight, as well as sling swivels fitted as standard. All of these variants of the Model A1 are identical to the standard Model A1 for game purposes.