From:Rohan e-mail:no@@gmail.com
Subject:RE: upper case casting dates Date:Tue Jan 30 22:12:08 2018
Response to:6763

Happy 100th to your cases then...

Its likely they would have had the foundry turn out a batch of them, as required or as forecast. ?

It would be interesting to compare all known variations, to maybe work out how many per batch ? The survival rate may make that more than tricky, but with engine numbers it may be possible. How many numbers are between your cases ?