With reference to FORE SIGHT hood for a RB2 Stutzen, i have two of them new in orig boxes and both have the smooth finish to them not dimpled
Also a RB2 Air sporter .25 cal. also smooth metal finish.Taking into account these are early serial numbers, first year production 1992 it would be quite normal i would think for B.S.A.to put dimpled ones on later models as i have found on a later 635 magnum.
Roly.