just found this original and it brings up that old chestnut of dry fix, waterslide or printed decal/sticker.
For ease of production waterslide is the usual method for restorers, but as you can see, this is a dry fix, and to be honest water slide is OK on the wing of model airkraft kits but far too fragile for bike frames.
Printed self adhesive is the modern way to go and with digital equipment the end product is near perfect…ie. no fading.
I believe that dry fix would also be available inbatches?