I have that same lens!!! I paid just over $200 for mine and it's in better shape!!!.... So it seems like an investment! At any rate, this seller has not stated it's a lantern lens and states it's a camera lens and talks a good talk and is good at name dropping and knows how to pitch it right.... Kind of like the 'other' well known story teller on E'Bay Cameo-Need-Ham, or whatever there name is this week. The interesting this is it has it's collar flange/ring.... But over $800 is smoking crack for something like this.