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:105mm Light Field Gun with firing mechanism and shells. This exciting new range of armoured vehicles and accessories has been produced in perfect 1/32 scale for use with the range of Airfix 1/32 scale soldiers - Taken from the 8th edition catalogue (1970)
17th edition catalogue (1980), listed as Field Gun from 105mm Light Field Gun.
Airfix Series (first appearance): 1 Rarity of early version: Rare First Issued: 1971
This kit appeared in these catalogues:
8th Edition (1970) Ref: 1764 9th Edition (1971) Ref: 1764 10th Edition (1973) Ref: 51502-9 11th Edition (1974) Ref: 51502-9 12th Edition (1975) Ref: 51502-9 13th Edition (1976) Ref: 51502-9 17th Edition (1980) Ref: 51502-9
Just some of the kits listed...