Luke Approved Military Surplus x Respirator Restorator. You are looking at a beautiful early version of what came to be the Canadian c3 gas mask. This is dated 1960. Comes with original haversack which is a Pattern 51 and a U. M11 filter which where issued at the time. Also has the rare blue coloured filter intake port. Straps are still stretchy and in good condition. Thank you for taking the time to read about the item. If you have any other questions do not hesitate to ask!