Jaeger-LeCoultre case numbers are also in three parts, 'xxx-c-mm' 'xxx' is the internal watch case number (different from the catalog case number). Is usually there a basic site to move to to find the times for these? I have got the following motions/numbers: 480/CW 624 490/CW (? Hard to read through) 954276 (How does this differ from the 480?) 90LD (? Hard to read) 509145 (How is usually this different from the 480 and 490?) I would appreciate any assist with this, especially if you can deliver me someplace to get it on my own! I explored the web and could not discover a listing.