My latest rescue, dragged it home from Hartville flea market this summer. Mid '60s-vintage Italian Carnielli folding bike that was looking like a junkyard cast-off. Looked like a challenge, price was acceptable after a bit of haggling with a desparate-sounding seller. Bike was 100% OEM everything, including the hex wrench for adjusting handlebars & frame pin removal.
So, off with the junk tires, seat, rusted & seized chain followed with total disassembly down to the bearings. 90% of the rust on the chrome bits came off with steel wool, thankfully. All original decals present except for the chain guard & the 1975 Ohio watercraft sticker someone slapped on long ago.
Replaced both tires, 1 tube (yes, there's an original tube still holding air!), flea market seat for a buck which is 100% better than the original, new chain, some bearing balls in a pedal, front wheel & bottom bracket had 7 caged ball bearings where 11 loose ones are supposed to be, so the cages went in the scrap pile. The only drawbacks to this thing now is a too-short for me seatpost & single-speed coaster brake rear wheel. Frame most likely won't accommodate a sturmey-archer 3-speed coaster brake hub, so I'm stuck with the original Sachs "Torpedo Boy" crap original. Frame hinge was rusted so tight I had to slam it upside a downed tree to separate the 2 sections. Lotsa work, minimal expense, put a couple miles on it 2 days ago.
So far, so good!