Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a Telescope Related Items Including glass telescope mirror 1938 Ad Corning Glass Research Telescope Mirror Doctor - ORIGINAL ADVERTISING Current Price: $36.95 Buy it now: n/a NOS/NIB Corning PYREX 8" dia x 1 3/8" thick Telescope Mirror Blank USA Glass #4 Current Price: $81.00 Buy it now: n/a 1