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?

Shotgun Ammo

Interesting French metallic shotgun shell - General Ammunition

Sold at Auction: INERT WW1 Italian 65mm Mountain Gun Shell Case

Experimental French Carbines: Development of Small Arms from 1948

Interesting French metallic shotgun shell - General Ammunition

Interesting French metallic shotgun shell - General Ammunition

Herter's Dove & Quail Shotgun Shells

Herter's Dove & Quail Shotgun Shells

The Metropolitan Museum of Art

Large Groupings Of Firearms & Knives, The Property of General Mark

Gevelot Patented Rifled Shotshells - General Ammunition Discussion

Interesting French metallic shotgun shell - General Ammunition

French Trench Art Vases, 75mm Field Gun Shell Vases 1916

The Invaluable Guide to Antique and Collector Firearms - Invaluable