Bought for a fiver, advertised as a TTO vintage Gillette. Handle is sturdy plastic with a bit of heft. Head is very well-constructed and works perfectly.
By the condition this razor has seen a few chins, so is it a Gillette? There is no branding anywhere.
That is a 1960's Gillette Slim Twist...A superb razor, i have a one myself..not an aggressive razor, but gives a smooth shave with the right blade choice.