face plate and 56 has a stronger midsection

Never had one break, but if you are going to make it a runner for yourself take it apart and replace 3 seals. 2 on the driveshaft & 1 on the propshaft. Check the roller bearings for smooth or quiet turning. If water has rusted any of the bearings replace them.(not that expensive at a bearing supplier) Now its good for another 50 years. Replace impeller and check driveshaft for wear in the area where the upper seal rides. Cross your fingers and hope for a nice one.

not really you can not tell. I think it was a selling point.

Remember this: Carl did not like Second Place.