Dale,
I've got one just like it. Best mask I ever had.
Yours looks like it's in great shape.
I wouldn't start cutting on it.
The "skirt" on mine was as stiff as a block of wood when I got it and I was sure it was going to live on a shelf and just look cool untill I was turned on to 303 Aerospace treatment. Near as I can tell, it's basically super Armorall. Everything you read says that once rubber has had it, there's no bringing back it's rubberyness, but after working in several repeated treatments mine feels almost new and seals great.
Additionally, not sure about the shape of your face, mine's pretty wide, but the mask was SO wide it was barely hitting the corners of my eyes and wouldn't fit tight there. I actually keep mine in a little soft-side mask box that pushes the outside corners in a bit and ends up looking like yours is now.
One of my straps was shot and because of those special moulded ends I figured my only alternative was a one-piece with slides on either side. It looked dumb and didn't work great, so I came up with a new two-piece strap of very simple design that I cut out of roofing rubber (EPDM?). I started a thread about it with some measurements and photos, but I can't seem to find it and if I could, I don't know how to link it here.
Maybe one of the MODS could help with that, hint hint.
edit.... found it, but not sure this URL is the correct way to link back to something???
http://www.vintagedoublehose.com/forum/ ... f=4&t=4746
Congratulations on the purchase. It works great, and is the most bad-ass looking of all masks
You'll love it, and if you don't I'll be more than happy to buy it for a spare
Fred