Reference For a Robert E. Lee "In Memoriam" Medalette / Token

I recently acquired what appears to be a Robert E. Lee "In Memoriam" Medalette / Token.
I have not been able to find any reference or even a like example of this.
Any help or reference for this would be greatly appreciated.
It is: 12.5g 31.85mm Diameter
White Metal or Pewter
Thank you

see #958 in this auction catalog:
https://nnp.wustl.edu/library/auctionlots?AucCoId=511514&AuctionId=511898&page=75
also this sale:
https://www.worthpoint.com/worthopedia/vintage-antique-robert-lee-memorial-519702814

Thank you for that information. It is appreciated.