Its army but not stamped as such this one was 'rubber stamped' and I can't make it. Anyway, I actually got this a couple of days ago, unlit and just needed a tank seal to get it up and running. Lovely stove and burning blue now the gold paint/lacquer has burnt off (the burner) The 'heater' is a tea strainer I picked up of ebay to use with a 111, perfect fit.
The tea strainer works well, you certainly can feel the radiated off it way more than without it Reusable Stainless Steel Mesh Spice Tea Infuser Strainer Filter Teapot Tea Leaf` | eBay Took about three weeks to arrive. For £3/$4 I think I'll order a few. That said I'd guess I run it for about 25 hours and no damage to show.