The number on the water table does match one of the numbers on the barrel assembly, 20523 The number on the trigger guard, it isn't the top tang Vic, doesn't match, 20525. Methinks someone at the factory used the wrong trigger guard when it was assembled. Somewhere out there is another Lefever with a trigger guard number that's two digits off from the barrel and water table numbersThe S/N is on the receiver and top tang and, they don't appear to match. Is the last number different in the two numbers? I'm not certain. S/N's were not required by the government on long guns until 1968.. I suspect those are mechanics or assembly numbers on the barrels.