The description below is taken from the Airfix catalogue this kit was first seen in. There is also extra information underneath the main catalogues description including the changes to the name of this kit in the catalogues.
Airfix Catalogue description:This 31 piece kit produces a three track width Signal Gantry which can be extended or modified by using similar additional kits. - Taken from the 1st edition catalogue (1962)
16th edition catalogue (1979), recorded as a Series 3 kit.
Airfix Series (first appearance): 1 First Issued: 1959
This kit appeared in these catalogues:
1st Edition (1962) Ref: 4023 2nd Edition (1963) Ref: 4023 3rd Edition (1964) Ref: 4023 4th Edition (1966) Ref: 4023 5th Edition (1967) Ref: 16 6th Edition (1968) Ref: 16 7th Edition (1969) Ref: 16 8th Edition (1970) Ref: 16 9th Edition (1971) Ref: 16 10th Edition (1973) Ref: 01616-2 11th Edition (1974) Ref: 01616-2 12th Edition (1975) Ref: 01616-2 13th Edition (1976) Ref: 01616-2 14th Edition (1977) Ref: 01616-2 15th Edition (1978) Ref: 01616-2 16th Edition (1979) Ref: 03601-6 17th Edition (1980) Ref: 03601-6
Just some of the kits listed...