The collection was one of Tonga, and it was compiled by Martin Baxendale FRPSL. Now, Tonga hardly features in this database: there is a 1953 definitive set for which Nigel Alan Dow did some work, and then there's the 1951 set marking the fiftieth anniversary of the Treaty of Friendship between Britain and Tonga. That particular set, with expection of the 1d value, was engraved by Joseph Lawrence Keen. And that is the set featured here today.
In Baxendale's collection was this wonderful die proof of the portrait of Queen Salote, as used on two of the values.
|Ex Baxendale 2016|
And so this Ex Baxendale item illustrates an important part of the whole engraved stamp production process, but for me it's extra wonderful because it's my first ex!