I think this razor dates from the 1960s as the plastic case is similar to the case on a slide rule I had at the time.

It is clean and not generally corroded, but there is a pattern of metal loss on one side of the cutting edge,
 so it would need skilled regrinding to bring it into shave condition.

Weight inc. case 57 g UK post £1.22  EU / World 1 / World 2 post £2.55 £3.15  £3.30