Remington 511 Score master age?

[Specializedjon]

I've researched how to find out the age of my Score master but all of the posts I've seen reference a code with letters = numbers, first number is the month and the second is the year.....what the....here are a few pictures of my rifle. Any help would be appreciated. Thanks guys.

My phones not letting me upload pics.

Left side, just forward of breach "74"
Right side "27"

Two screw mag well

[Specializedjon]

Single post front sight

[Specializedjon]

"Hat tip" to 870Classic for helping me run this information down. I'll post updates and pics when we figure it out. I know you all are waiting anxiously....haha