Jeff
Look at the picture in my above posting and you will see a protrusion that keeps the opening lever to always be centered.

Acier de surete = safety steel

CHOKE RECTIFIE = chokes regulated

Circle 65 = 65mm chambers

Mike

P.S. if you will take your pictures in the bathroom without flash you will do well. In most houses the bathroom is the best lit room in the house.
My camera is an ANCIENT Sony Mavica 73 with 3 1/2 disk format, Ebay $10.00

Mike