This crank fits the Haller E49 Granville model anniversary clock, plate # 1522B in Horolovar's 400-Day Clock Repair Guide. This clock is notoriously known as 'The German Time Bomb'. These clocks are also identified by the following characteristics: On the back 'plate', there is an arrow pointing counter clockwise over the winding arbor, and in the lower right hand corner, the words 'S. Haller made in Germany one (1) jewel unadjusted'. Also, the movement sits atop 4 columns, rather than the usual 2, and the face is open (skeleton), with the gears visible. Additionally, there is a small plate under the Roman numeral XII with the importer's name, most often, but not always, Elgin. These clocks have a very large winding shaft, much bigger than other 400 day clocks, and originally came with a winding crank rather than a key. See the second picture for an example of this clock.