Classic Spaceman, White with Airtanks, Centered Logo (2446 Helmet) (3626b Head)

Comes in 1 set, made of 5 parts. The lowest-priced set it comes in is 852535 Vintage Minifigure Collection Vol. 2 (RRP £11.75).

Check the minifigures carefully when buying a used set: they're part of its grade.