This is a Carl Zeiss copier lens mounted in a ABS plastic housing and is great for a starter scope.
This is the preferred lens for the "copierscopes". With a 300mm focal length, the aperature works out to be about 62mm. There is a small 1/8" scratch on the glass, but as a rich field scope, it would be insignificant on performance. Notice the multicoating. It even has a flocked retracting dew shield! The back side has 3 set screws for attaching to a 2.75" OD tube. This assembly weights 2.5 pounds.
I'm asking $40 shipped CONUS. Cashier's check or money order, Please.
Paypal may also be an option.
Thanks for looking.