My wife picked up this old Poulidor clunker in the summer and I'm finally getting around to cleaning it up. The frame is 58cm and has nice forged Simplex drop outs.

Several questions:

The top label on the seat tube appears to be a frame label indicating something about the type of tubes used - probably it originally had three circles - blue, white and red - but much of the decal is gone. Can anyone tell me what it likely indicated before it got damaged and if it indicated something good ? Other frame label just indicates "Production Mercier".

The seat has "Grand Prix" printed on it but it is one hard piece of black plastic. Is this actually the seat, or is it just the seat form and requires padding or a cover of some sort.