The Leica 72 is the only Leica whose image size is 18x24mm, giving you 72 frames on a 36 exposure roll of film, hence the name "72". The camera is based on a IIIA body, the film gate , counter, viewfinder and wind mechanism having been modified. Flash synchronization from the IIIF was also added. It is engraved 18x24 on the top of the rangefinder cover just above the serial number.
This camera was produced in extremely small quantities. One source lists 150 units assembled in Canada, 33 in Germany. There are reports of a 72 based on a IIIC, but it may be a prototype.
