Redfield Widefield Scope - Date Made Question

[gjw]

Hey all, I have a 1.75x5 Redfield Widefield scope and I'd like to find out when it was made.

It has no markings or SN on it. Just Redfield 1 3/4 x 5

Any idea when it was made

Many THANKS!

Greg

 

[gjw]

Sorry about the light text, did a copy and paste