I have a pair of cases like above, with lock cylinders installed, unlocked, no keys. First choice would be to identify key code and order keys. Don't see any visible numbers on the cylinder. Second choice is buy a set of six locks with keys for $70. How can I get the old ones out? Don't see a simple way to do that either. Third choice, maybe the best, take bags to locksmith and let them deal with it. Suggestions?