In brief . . . the 304 was launched by Peugeot in 1969. It was based on the existing 204 but borrowed front end styling from the 504. It's styling is attributed to Pininfarina.
Five versions were made - the saloon, the coupe, the cabriolet, the estate and a van. To my eyes the saloon and coupe are rather dull looking cars, but slice the top off and hey presto you have a very dashing looking cabriolet.
Just under 19,000 Cabriolets were produced from 1970 until 1975. There was one significant 'revamp' in 1972, when the 'S' version came along. Styling tweeks included a new dash with rev counter, new front grille and badge, new wheels and headrests on the seats. The 'S' was also equipped with a new twin carb 75bhp 1.3 engine (previous Cabs had 65bhp engines).
836 Peugeot 304 Cabriolets were made in right hand drive for the UK (of which 244 were pre 'S' versions). You can click here to download a 1972 Peugeot price list. All the surviving 304 Cabriolets that I have discovered are listed on this site; assuming there are still some undiscovered ones out there I'd guess that there are around 100 survivors, around half of which will be 'on the road'.
Peugeot 304 and 304S Cabriolet
1970s French Classic Car. Record of UK models.