Another Remington 1100 Manufacturing date question

[Virginian]

November 1963 is when the barrel was stamped, if that's the original barrel, and it very likely is. the gun was likely late 1963 or early 1964. The 'E' is an inspector code. Neat how those early barrels have that long unventilated section at the receiver. I have 50***V, bought new in 1963.