This one looks like the Italian Order of the Crown in some respects, but beyond that I have no idea. Austrian?

Started by HBG
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HBG

This is a large neck order with heavy enameling. Obverse seems to have the Roman Crown device, but the reverse has a divided shield with a rampant lion surmounted by 3 stars at the left and a diagonal bar at the right. Have a nagging thought that there might be some Austrian influenece here. Any ideas?

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