This is an automatic 4 leaf shutter unit with a multi-coated lens assembly made for a camera. Has a mounted multi-element coated lens assembly with a 30mm focal length. Clear lens diameter is 13mm. Has a Seiko of Japan IR3S29BB integrated circuit which we believe to be a self timing chip and film speed sensor. We don't know what camera it was made for and don't have voltage requirements or other specs. Assembly is 2-15/16" long by 1-9/16" wide. Shutter opening is 17/32". Unused in original static shielding bag. Lens alone is worth more than our price for the entire assembly
