Hey guys, my dad recently passed and I'm the only one in the family with a license. He has an older model Wingmaster and I'm trying to discern the markings and therefore age. What are your thoughts on this?

Here is the Remington codes page:https://www.rem870.com/gun-manufacture-date/remington-serial-number-lookup/
Am I looking at all three letters for the age or just the "EF" or the "FJ"? There is no month code for "F" so I'm thinking that the "EF" means October 1985? What do you guys think?

Here is the Remington codes page:https://www.rem870.com/gun-manufacture-date/remington-serial-number-lookup/
Am I looking at all three letters for the age or just the "EF" or the "FJ"? There is no month code for "F" so I'm thinking that the "EF" means October 1985? What do you guys think?























































