https://vizardsgunsandammo.com/used-marlin-model-55-20g-shotgun-in-good-condition/

This firearm is used and in good condition.

Marlin
Model 55-20
Caliber 20G
Barrel length 26”
Bolt action
Comes with one magazine.
This firearm does not have a serial number. It was not required pre 1968 for lower end firearms.