This coin is being offered as such, and looks interesting, but I can't find anything similar in my Standard Catalog. Unfortunately no data are supplied about size or weight. Obverse: QUIESCIT AD GLORIAM SURRECTURA Eleonora Wilhelmina 1653 and a big WE in the middle. Reverse: a cross with Jesus, text DG WILHELMI DUC S FILIANATII-MAX:
I cannot comment on authenticity, but it appears to be so. https://www.ma-shops.com/hoehn/item.php?id=6774&lang=en
Must be a newer edition. Mine is 4th edition copyright 2008, and it doesn't show anything smaller than a thaler for Saxe-Weimar (which is on page 757-760), except for Saxe-Weimar-Old, which has a few sub-thaler coins, but not this one. Anyway, thanks for the info.