Fred, Thanks for your work and efforts to preserve our history. The SS Red Oak Victory located in Richmand, Ca. is in the process of restoring. And it was stripped of everything. On my last trip there they had all of their 20mm but
most were not in place. And they were looking for a 5 inch 38. And were having problems locating one. They might be able to help you and
you might be able to help them. Their web site and phone is listed on this web site under ships.
Good luck, Al