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?

Personal/Field gear subpage - WW2 militaria

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

5.11 Tactical Flex Shotgun Ammo Pouch (Color: Kangaroo), Tactical Gear/ Apparel, Pouches, Shot Shell Pouches / Carriers - Airsoft Superstore

2024 Guide to Load Bearing Equipment: History, Tips, & Misteps

Matrix 10 Round MOLLE Polymer Shotgun Shell Carrier (Color: Tan), Tactical Gear/Apparel, Pouches, Shot Shell Pouches / Carriers - Airsoft Superstore

US WWII 12GA Khaki Shotgun Shell Pouch, Ammunition & Magazine Pouches - Canada

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

How many rounds of ammunition did an infantry rifleman carry in WWII? How accessible was additional ammo during battle? How common was running out of ammunition? - Quora

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

Shot Shell Bag

U.S. WWII Khaki Shotgun Shell Pouch – International Military Antiques