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?

COMMONWEALTH FIELD GEAR

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

WW2 USA field gear Shotgun Shell Pouch - repro

M1942 SHOTGUN AMMO CARRY POUCH-KHAKI

US WWII Shotgun Pouch, Made in USA

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

Equipment - 13th Guards Poltavaskaya

US WWII Shotgun Pouch, Made in USA

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

Ammo pouch hi-res stock photography and images - Alamy

Personal/Field gear subpage - WW2 militaria

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

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

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