[UPDATED August 14, 2025 For whatever reason, I can no longer edit the first post...]:
Eighteen post war 4" pre-27's posted in this thread (4 invoice only), of which eight shipped to H.H. Harris on April 22, 1957:
SN S103689 Shipped February, 1954
SN S164615 Shipped November 9, 1956, H.H...