Well...as Ramking and Mike Mason can attest to, my cataract surgery went "not-as-well" as was promised and I am currently in 2 separate pair of glasses, neither of which are working well for me. I thought the knife "had" 7 spacers. If not, I would agree to 70's or earlier 1980's for the vintage.
Best, Capt. Chris
_________________________
Capt.Chris Stanaback
RKCC/RKCA Founder
RKS #016
NRA Lifetime Member
CAPTSTANABACK@aol.com
WEBSITE: www.captstanaback.com