I have a nice Nikko Stirling 3-9x40 Jap scope, gloss black with the "red lens coatings" and I'm considering mounting it on my .22 RB2 Airsporter carbine.
Would this be lets says a "Period Match" ?
I've currently got a BSA Sweet Sixteen 4 x 32AO on there right now and proportion wise it looks OK and it performs well but I'm not too sure of the period match ?
This scope is about 7/8 years old purchased new.

Should add, the rifle shoots brilliantly with ELEY Wasp 5.5's and RWS Superdomes , the NS scope is very bright and sharp so I'm hoping that the combo will be good !