The only 40 mag scopes were the PR boosted Vari x 3 and EFR by 92.
Mid to late 93 Nightforce came out with that 40 mag Jenky was selling.
Only other scope by 1994 was a shocking illuminated 50 mag, forget the name begins with O.
Had a Tasco TS 8-32 milk bottle visually the same as the Zeiller. It would have gone back the next day if it wasnt a bank holiday, exchanged for the Zeiller.
Quite good optically.
Take it from me it was April 1994 100% sure.