Original WWI US ARMY Doughboy Gas Mask USMC Marine

This five strap gas mask is marked 182x112, the canister has paint lose, the hose has flattened by the canister and the mask looks pretty nice except the inside painted black finish is flaking off like all the others that I have seen. The bag is marked WIJE or WDE?? on the flap and the inside is marked R-18-26. This is the proper type bag for the mask but I did not get it with the mask. The bag is solid with wear and fading. The little tongue type thing inside the metal bracket clamp at the bottom of the mask just broke off at the joint.