Welcome,
The Marlin 99 was the predecessor to the Model 60 (still current) and the Model 99M1 was a variation made to mimic a M1 Carbine with handguard. With this, they shortened the magtube to terminate just proud of the stock and added a receiver mount adjustable sight which necessitated a taller front sight. They also came with sling swivels, gold trigger and walnut stock with the bullseye. The rear sight seems to be the sought after item because they were often seperated from the rifle when a scope was put on. They occasionally show up on e-bay.
No serial number on the one you are looking at means older than 1968. There should be a 2 letter code on the barrel near the receiver and this can be decoded for a month and year date of manufacture.
I love mine it's a fun and nice looking rifle.
As far as value.... I'm one data point and paid $110 for mine out the door with the rear sight. There was one for sale on Armslist locally, started at $300, relisted for $250, then $200 and then went away, I don;t know if it sold. You said you traded, so hopefully you each got something you wanted. I wouldn't hesitate to pick up another one, but I wouldn't go over $100 without a rear sight and $150 with a rear sight. If I get another 99M1 or my preference a 989M2 (same rifle just detachable box magazine fed instead of tube) without a rear sight, I will drill a hole for the front and mount Tech Sights on it.
The Marlin 99 was the predecessor to the Model 60 (still current) and the Model 99M1 was a variation made to mimic a M1 Carbine with handguard. With this, they shortened the magtube to terminate just proud of the stock and added a receiver mount adjustable sight which necessitated a taller front sight. They also came with sling swivels, gold trigger and walnut stock with the bullseye. The rear sight seems to be the sought after item because they were often seperated from the rifle when a scope was put on. They occasionally show up on e-bay.
No serial number on the one you are looking at means older than 1968. There should be a 2 letter code on the barrel near the receiver and this can be decoded for a month and year date of manufacture.
I love mine it's a fun and nice looking rifle.
As far as value.... I'm one data point and paid $110 for mine out the door with the rear sight. There was one for sale on Armslist locally, started at $300, relisted for $250, then $200 and then went away, I don;t know if it sold. You said you traded, so hopefully you each got something you wanted. I wouldn't hesitate to pick up another one, but I wouldn't go over $100 without a rear sight and $150 with a rear sight. If I get another 99M1 or my preference a 989M2 (same rifle just detachable box magazine fed instead of tube) without a rear sight, I will drill a hole for the front and mount Tech Sights on it.

