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?

Military Tour WW2 German, American, British, Canadian Uniforms, Helmets & Accessories

Personal/Field gear subpage - WW2 militaria

Wwi & Wwii Us Army Shotgun Ammo Pouch Lot Of 2

US WW2 Canvas Shotgun Shell Ammunition Pouch Marked JT&L 1942 : Gun Magazine Pouches : Sports & Outdoors

VIntage WWII US Spare M13 Parts Pouch –

US Vietnam Canvas Shotgun Shell Ammunition Pouch

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

Original US WWII Canvas Shotgun Ammunition Pouch

An updated picture of my Korean War stuff : r/Militariacollecting

shotgun m1897 in ww2 and equipment - FIELD & PERSONAL GEAR SECTION - U.S. Militaria Forum

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

US Vietnam Canvas Shotgun Shell Ammunition Pouch

WW2 US Army Khaki Shotgun Ammunition Pouch - Military Canvas Reproduction

World War Supply US WW2 M1923 Cartridge Belt with Suspenders & First Aid Kit Khaki Marked JT&L 1942 : Sports & Outdoors