Interesting French metallic shotgun shell - General Ammunition

Can anybody ID? Brass case, steel base. Upon close inspection there seems to be wire inside the buckshot load, i guess it might be connecting the pellets to tighten the group upon impact. Was this some kind of experimental round? Is there any considerable value to it?

Interesting French metallic shotgun shell - General Ammunition

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Interesting French metallic shotgun shell - General Ammunition

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