Walking Liberty Half Dollar?

Here's a piece about to sell today.
https://www.liveauctioneers.com/item/77159001_early-20th-cent-plaster-relief-federal-eagle-seal
How is it related to the WL half dollar? Was it used in designing the coin or is it inspired by the half dollar design? A question for the researchers.
Collector and dealer in obsolete currency. Always buying all obsolete bank notes and scrip.
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Comments
I cannot answer your question, but it did sell for a significant price ($600) .... would make a really nice display piece. Cheers, RickO