BrickLink - Part 193b1 : LEGO Minifigure, Headgear Helmet Space / Town with Thick Chin Strap - without Visor Dimples [Minifigure, Headgear] - BrickLink Reference Catalog
LEGO minifigs - Part 193au | Minifig-pictures.be
6702 lego: Search Result | eBay
LEGO Set fig-001191 Policeman, Plain Black, White Helmet (193au Helmet) (1979 Town) | Rebrickable - Build with LEGO
BrickLink - Part 50665 : LEGO Minifigure, Headgear Helmet Space / Town with Thick Chin Strap - with Visor Dimples (Reissue with Top Dimple) [Minifigure, Headgear] - BrickLink Reference Catalog