The gift he would choose himself. At least if this Australian 1950 advertisement is to be believed.
From the 25 November 1950 edition of Australian Women’s Weekly.
When making up your Christmas list, pan to give your man a new Gillette Razor Set … give him shaving comfort for life. The famous Gillette “Aristocrat” ONE-PIECE is the finest razor ever devised for the handiest, easiest, fastest shaves. With it, blades are changed like magic. TWIST – the razor opens! In goes the blade! TWIST again – it’s ready for use. There are no loose parets to assemble or mislay.
Given that the Aristocrat razors have stood the test of time, I guess it’s a Christmas gift a lot of men would still appreciate today. Especially in such a nice box!