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

Modern Classics Ducks Unlimited

US WW2 Canvas Shotgun Shell Ammunition Pouch Marked JT&L® 1944-D. OD

Some of my WWII Early War - End War US Army gear : r/milsurp

Does anybody know what the pouches on the chest of this uniform are for? My buddy brought it up and I can't find a good answer : r/enlistedgame

HSGI Shot Shell Tray Ver1 (Color: Smoke Green), Tactical Gear/Apparel, Pouches, Shot Shell Pouches / Carriers - Airsoft Superstore

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

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

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

NcSTAR 17rd Tactical Shotgun Shell Pouch (Color: Tan), Tactical Gear/Apparel, Pouches, Shot Shell Pouches / Carriers - Airsoft Superstore

USGI Shotgun Ammunition - ALL OTHER FIREARMS - U.S. Militaria Forum

Scarce WWII Model 1917 U.S Shotgun Shell Pouch with Shells

US WW2 Canvas Shotgun Shell Ammunition Pouch Marked

The mortar I found 75mm HE shell from WW2 identified as the round taken from the water in Stockholm. Missing the warhead but was called in and bomb squad took it away

Original WWII U.S. Army Wooden Shotgun T3ABD 12 Gauge No.00 Buckshot M – International Military Antiques