Need help identifying a medieval coin

Small silver coin 17 mm max diameter, weight 0,62 g.
I believe that this is Pfennig from XII-XIII centuries.
Need help in determining the ruler and region.
0
Small silver coin 17 mm max diameter, weight 0,62 g.
I believe that this is Pfennig from XII-XIII centuries.
Need help in determining the ruler and region.
Comments
I'm seeing three monkey faces! And I'm sober. Peace Roy
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Having trouble pasting the link but saw an Eberhard II Friesacher pfenning that had the female obverse and 2 headed reverse, but yours is more crude. It's a stretch, but maybe someplace to start if you haven't been through those or the Wiener pfennigs.
I only know enough about this topic to make myself dangerous Do you have access to CNA? Also saw pics of 2 coins with the strange open mouth style identified as CNA I Ca21 and CNA I CB20. Listed as from Bernhard Duchy of Carinthia St Veit Mint.
Thank you, @Oldhoopster
I did some research. It looks like a coin from Frederick III, the Strict, Landgrave of Thuringia 1353-1381.
Coburg, Thuringian mint. Pfennig of Regensburg struck.
Examples from coinarchives.com

coinarchives - 1
coinarchives - 2
It looks like Frederick III wasn't too strict when it came to minting standards!
Perhaps he became strict after seeing minted coins.