I'm not sure if the sizes will be right but you might want to check the
decals in the model railroad section of your favourite shop. There are
quite a few decals for everyday items and some may be found for G gauge
trains that are what you need.
Bill Banaszak, MFE
Does it need to be a decal for a service station? If not, like for a sign,
just find one on the net, copy it into a program like Paintbrush, size as
needed and print on an inkjet printer (as many as you need and cheaper than
decals) and shoot with clear coat or fixative. Printed on white paper it
could even be lighted.
I assume these are for the station signage?
If so, they can certainly be far larger than, say, a Mobilgas "Pegasus" emblem
that would be used on a race car, oil can in 1:25 scale.
If you are anywhere where there are indoor car shows at this time of year (or
an outdoor car show/swap meet if the weather's warm), almost always I see at
least one vendor with 1:1 car secondary sponsor logo stickers. These are done
on clear mylar, in correct colors; very, very sharply printed. They are
certainly large enough for the signboard (road sign) of a Mobil station.
One could also scan these, print out on decal film, however, be advised that
unless you have access to an ALPS printer, getting the white part of them to
print won't happen, so you'd have to put them on a white background.
These mylar stickers run about $3 each or so. I have several of them set aside
for vintage car diorama's.
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