This is a Vintage Shelby Traveler kids bicycle.  This was the base model for the Donald Duck bikes of the early 1950's.  This bicycle has some paint, but most of it is flaking off and showing lots of surface rust.  Still has the original tank and rear rack, but missing the handlebars and stem.

Made in Ohio, in 1951.

Not rideable.  Will take a considerable amount of work to ride.

Rack is the same color, but might not be original
fenders seem to not fit very well, and a different color, probably not original

Measurements:

Seat Tube - 16.5" (about)

Top Tube - 20"
Stand-over Height - 28"

Specifications:

Seatpost - steel original post

Saddle - missing the cover, plenty of rust, not really rideable

Stem - n/a

Handlebars - n/a

Crankset - original 1 piece steel cranks with a 4 arm chainring

Pedals - Not original pedals, these are block style marked with Schwinn

hubs - New Departure W front hub, rear hub is a New Departure Model D coaster brake - both are missing chrome
rims - 24" balloon tire rims, painted originally with silver and black pinstripes, steel
missing several spokes front and rear
tires are 24 x 2.125 and are both shot and not rideable

Serial #51 - 61072

Reference #30374