Old, antique Kollmorgen Optical corp. brass maritime 3 pull collapsible telescope with a yellow filter in the eyepiece (please see attached pictures). Item is 30&1/4" fully extended and is 10&5/8" fully collapsed. Telescope is marked KOLLMORGEN OPTICAL CORP. BROOKLYN N.Y., as shown, large lens is approximately 1&3/4" wide, and eyepiece lens appears to have a yellow tint. Telescope works well, we believe it is probably between 10 and 15 power, and when viewing through it everything has a yellow tint, so this may have had a special function to it. Condition is as follows: Large barrel of the telescope has several dents on it, as shown; next size barrel has one small dent, as shown; eyepiece has a slight dent at the edge (shown); there is overall wear, as shown. Also, this had some leather parts to it that were dilapidated, worn, and smelled musty. We can ship these with the scope otherwise, we will discard them. Requires .00 shipping and US sale only. Also, this is our twenty fourth year on ebay and, as always, satisfaction guaranteed or money back. Thanks for stopping in.