The particular deterioration patterns of Reynolds decals fascinates me.
I tried to preserve these when I painted over some new braze-ons, but I stupidly put the masking tape directly on the decal. This is the state before I did that.
I wish I had a better picture of this, the "3 Tubes" decal from my 1975 Motobecane Grand Jubilé. It's gone now, but the lettering seemed more yellow than the reproductions.
This one, from a 1983 Trek, feels like a fake. It's too well preserved.
I've been told that this one is probably a reproduction, but the only other decal on the bike appeared to be original, as was most of the paint.