I found this Gillette Tech at a junk shop this morning for the price of £1. :)
From a quick search on the interweb and based on the handle style and lack of date codes I think its a 1967 model.
http://img.tapatalk.com/569e9ca0-18cc-675a.jpghttp://img.tapatalk.com/569e9ca0-18d5-ffb4.jpg
Well chuffed!