According to Master Lock, they have quit putting the serial number on the lock body. http://www.masterlock.com/faq/lostcombo.shtml http://www.masterlock.com/fa

According to Master Lock, they have quit putting the serial number on the lock body. http://www.masterlock.com/faq/lostcombo.shtml http://www.masterlock.com/faq/lostcombo.shtml