DSCF0728 by
AviationMetalSmith, on Flickr
01027 and 03606. Numbers appear in white, on the chain stays.
DSCF0608 by
AviationMetalSmith, on Flickr
02963 , above.
01214 , below:
DSCF0593 by
AviationMetalSmith, on Flickr
The numerals are about an inch high.