Information provided by LeBLOND LTD
Info for my lathe is as follows:
Serial Number: 167879
Catalog Number: 644-Z
Size:   9" X 3-1/2'
1/2HP  220V/3PH/60HZ
1725 RPM
Ship Date:  December 4, 1945
Original Customer:  Sid Harvey, Inc., Valley Stream NY.