I am mostly into real games. Have 21 of them at the moment and have owned a couple hundred over the years and this is literally the first time I ever heard anyone say anything at all about unoriginal locks.
Hey .. no disrespect.. I understand that you've been a long time member of this community, but I wonder .. of the "couple hundred" that you owned, how many were candy cabs? You see, on woody's, being picky with the lock is like being picky with the bolts that hold your monitor frame down -- who gives a $%#$ .. right?
But SEGA made only 2 locks for candy cabs: 5575 (which are typically found under the control panel, locking it down) and 5380 (used for main panel, coin mech door, and coin box door). In both cases, Sega went out of their way to create a unique lock cylinder. In addition, all the keys have a nice looking Sega logo carved into them.
I wouldn't be surprised that even in Japan all these locks are replaced with generic tubular locks. But if you were to order a Sega candy cab for home use in Japan, you would get these 5575/5380 locks.
So OP.. you can drill the lock out, put generic tubular locks on, and treat your candy cab as a "survivor" -- proudly wear its scars/cigarette burns/yellowed bezels/dinged body/etc in your collection. Or you can restore the body, restore the monitor, get new overlays, joysticks, and buttons and bring it back to show room condition. Having the 5575/5380 locks + keys will complete the restoration.
I know all this sounds a bit anal .. but how different is that from people that want coin doors with Atari written on them, or look for a specific volano style button in a specific color?
If these locks weren't that important for a restoration, they wouldn't be selling for 45$+ per lock/2 key set or 25$ + shipping for just the keys. I know that most people on this forum focus on restoring or building new woody cabs (I was one of them with my first MAME machine back in 2003) But for those restoring candy cabs (more popular in Europe, Asia, and Australia) having original SEGA locks is very important.
(.. and yes, I did pay that much to get 3 sets of 5380 locks/keys to complete my Sega New Astro City restoration -- I already have 2 5575 locks + set of 2 keys)