Your serial number 3PW- B-13593 breaks down as follows...
3PW- B-13593
3 = St Louis Assembly Plant
PW = 1946 6400 second series (produced from May 1946 until early 1947 when the AD's were introduced)
B = Month (February)
13593 = unit number starting at 1001 at each assembly plant and continue in numerical sequence.
Mike B
