836409, E 25 1, 28 XX
E = 5 = March oops = May (thanks for the correction, Bobb)
25 = 25th day
1 = 1931 (base on the year of the casting code, 836409)
Maybe someone else can decode the 28 XX?
Last edited by tclederman; 11/22/2020 3:26 PM. Reason: Oops - error corrected (thanks to a PM from Bobb)
