Safety Helmet Mask Appraisal

M-S-A All-Service Gas Mask with All-Vision Facepiece

This is a vintage industrial M-S-A (Mine Safety Appliances Co.) All-Service Gas Mask kit, complete with its original red-painted metal carrying case and internal accessories. The set features a black rubber 'All-Vision' facepiece with large glass lenses and integrated metal hardware. A notable feature is the red metal canister, which is secured by a distinctive black lace-up harness and features a circular visual window indicator for the timer function. The interior of the case lid retains a highly detailed, large white paper instruction and parts label, which includes diagrams of the mask in use, a full parts list, and the Pittsburgh 8, Pennsylvania manufacturer address. The case construction uses structural metal reinforced edges with rivets, divider compartments to separate the mask from the canister, and a dark exterior finish that contrasts with the vibrant red interior. The corrugated grey rubber breathing tube connects the mask to the filter system. Condition-wise, the paper label shows yellowing and some adhesive staining around the edges due to age. The rubber components appear intact but may show typical hardening or bloom associated with older industrial rubber. The lacings and fabric straps show light fraying, and the red paint on the canister and case interior exhibits minor surface scuffs. Based on the postal zone and design, this unit likely dates from the late 1940s to the 1950s.