- Cupertino, California, United States
- Nov 10th
VINTAGE 1959 MSA MINE SAFETY APPLIANCE GREEN SKULLGARD HARD HAT WITH LIGHT CLIP AND NORTHROP GRUMMAN LOGO USA For your consideration is a vintage climbing caving construction safety Skullgard hard hat manufactured by MSA, Mine Safety Appliance. The hard hat is green, has a light / lamp bracket on front, is dated to 1959 by its label, and I was told it has Northrop Grumman logos on either side of the hard hat.