Is this a WWII Shotgun Shell Pouch? - FIELD & PERSONAL GEAR

I've been offered this rig and was wondering if this is a shotgun shell pouch. There are the only two photos I have. Also, what is the value of a set like this?

The Collector's Guild

Epic Militaria Replica WW2 US Shotgun Ammunition Pouch, Ammunition & Magazine Pouches - Canada

COMMONWEALTH FIELD GEAR

COMMONWEALTH FIELD GEAR

My WWII US Paratrooper kit. Couldn't find a M1A1 at the time so I settled with a M1928 with stick mags instead : r/airsoft

All my original WW2 German gear and guns : r/Militariacollecting

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44th Collectors Avenue - Scarce shotgun shell pouch - Airtress Midland 1944

US WW2 Canvas Shotgun Shell Ammunition Pouch-d OD 1944 - Canada

US WW2 Canvas Shotgun Shell Ammunition Pouch marked JT&L® 1942

Black Owl Gear Reproduction WWII Three-Cell Magazine Pouch for M1A1 Thompson Submachine Guns, Tactical Gear/Apparel, Pouches, Mag Pouches (Rifle, SMG, MG) - Airsoft Superstore