Also, any TD-124 Mk2 platter is very likely to have been separated from its bearing at some point in the last 50 years, and not subsequently realigned in the factory using a run-out gauge, so it's not something to get really anxious over. Some people do get exceedingly anxious about this, but as Tony says it's not at all hard to re-align a Mk2 platter. My own view is that it's all too easy to damage the main bearing shells if the bearing spindle and platter are kept as one piece when removing and replacing - I always separate them and then spend a few minutes realigning the platter afterwards. There are plenty of other, more critical factors involved with getting a TD-124 to sing properly than this!
Thorens must have had a good reason for adopting such a crap Mk2 platter fixing arrangement after the simple and foolproof Mk1 iron platter, but that good reason eludes me. I now use a Swissonor non-magnetic ferrous platter which has the same snug interference fit to the spindle as the Mk1. I'm not sure it's better than a genuine Mk1 platter, but the old 124 does sound much better with it compared to the alloy Mk2 platter.