I found a gold chain and saw some initials 'LBP' on the clasp of one side and the other in very tiny print '916'. I am aware that 916 is 22K gold but what does 'LBP' mean?

Thank you for finding it, LBP are my initials, will send a return address. Seriously, it is 22 Karat:
Metal Stamp (http://www.amazon.com/gp/help/jewelry/?ie=UTF8&popup=common%2Cmetal_stamp)