1957 Cadillac Fleetwood Series 75 Limousine

Really hard to find 1957 original Cadillac 75 Series Fleetwood. 1 or 1010 built, this is unit 604 (based on serial number).
Has been stored indoor in dry place for the last 20+years. It was running great when parked and the engine had been rebuilt not long before. I believe that with just a little bit of maintenance work, this Cadillac could be put back on the road in no time. I did not try to start it but the engine seems to be turning by hand (it is very big and heavy so it's hard to tell). I will advise to do a proper tune-up before attempting to start it anyway.
The car is pretty much all rust free save for a few very minor spots. It is extremely straight with no dent or trace of previous accident/repairs. The frame and under body is totally rust-free. The paint is older, there are a few tiny area where you can see bubbles but it is very limited.
The interior is in great shape and believe to be all original, including the fold-down seats.
Tires hold air. Chrome is excellent all around. All the original emblems and parts are there. The only exception is that one of the rear tail lights housing is from a different year and the plastic turn signal cover are a bit melted on the driver side.
Windshield has a crack and will need replacement but these can be had for about $600.
It has factory air conditioning which obviously needs servicing but it's all there.