The Mystery Material...

Hi Guys! I need your help identifying a vinyl that I found a small swatch of lying around the shop - it's pretty incredible, and if it's still around, I need to get some more!

It's a metallic gold, but not a metallic gold like you normally think of. It's got luminescence and shine, similar to signgold's Satin surface gold. It's from 3M, "specially formulated for Gerber Scientific", it comes on a white liner, and has a grey back so it's only for 1st surface applications. I initially thought it was signgold, but it's MUCH thicker- like 5+ mil, and is much easier to work with than SG- it doesn't get chewed up by the plotter. Pictures are probably worth a couple of thousand words here, so take a look!

Incredibly luminous

Lots of small metal flake

Silver / Gray backer 

Scotchcal 220 liner- this MAY be a red herring, I'm not sure.

I've never seen a "Standard" Metallic that shimmers like this does! I just recently relettered our shop door, and used burnished gold vinyl on it; our logo has incised letters, so I had tried to use clear to create the bevels- I wasn't happy with the effect the clear gave me.

When I replaced the clear with this "Mystery Material", it was exactly the effect I was looking for! It's got a very similar look to the beveled letters you see in reverse glass gilding.

Any ideas on what this might be? Hook me up with what it is, and I'll do my best to hook you up- I've got a really cool project in the works!