Looking at what remains of the vin stamp it's either 19N555219 or 19N556219, both indicate a Dec of '68 Norwood built Z, 551863-569987.
Block date code is K148 which is Nov 14, '68 so date stamp on block could appropriately be V1121DZ, Nov 21.
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I sold a V1121DZ ,, VIN. 549121, to a guy in N.Y , couple years ago,