I thought that ETF sold Dumont decals, but I don't see them now at
http://www.earlytelevision.org/ .
If all else fails, you can send photos to Scott Wright at
http://www.solidesign.bizland.com/decals.html and he'll make repros from your images. He made decals for my RCA CT-100 and Admiral 24C15 and I was happy with the results. It helps to photograph a ruler next to the decals for scale.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html