And yet another question... This new to me scope of unknown vintage comes with one 18mm eyepiece. It is a Bausch and Lomb. Would that imply that the vintage is early 1980's or whenever B&L bought out Criterion? Should I be concerned as it relates to quality, or were these scopes consistantly good throughout their production years? My personal preference is for older scopes from the 40's, 50's, and 60's, because just like their human counterparts of that vintage, THEY ROCK!

other Keith