Katyusha over on 1896Forum just got one of these old Stoeger catalogs in, too...Weird that they are being offered (or reprinted or whatever) again...
http://www.cornellpubs.com/old-guns/...p?item_id=1003
The top Luger appears to have a 1900 barrel...high sight base + unique blade...and 4 1/2" long...