For an obvious posthumous cast, you may inscribe the casting date along
with the foundry information.  You may inscribe "posthumous" in the same
location.  You may also make the cast at a noticeably reduced or enlarged
size.
 
What with all the posthumous casting going on these days, it's refreshing
to hear some folks (in Kansas) realize there are serious issues involved!
 
John Scott (native of Kansas), New York Conservation Center