I am not sure if these qualify, Revstampman.
results of my research a few years ago.
R.L. Stevenson lived from 1850 to 1894. He was a prolific and popular author, and had a variety of arrangements with his publishers for the collection of his royalties.
After his death, the rights passed to his widow Fanny and after her
death in 1914, to his stepson Lloyd Osborne.
By 1916 Osborne was experiencing some difficulties in collecting
royalties due, and in 1920 he wrote to the Society of Authors,
Playrights and Composers asking their help.
The 1912 General Regulations allowed for the collection of copyright on published works (usually Mechanical Music such as records and piano rolls) by the means of stamps (see here). The Society had been active on its composer members' behalf since 1912 in the collection of royalties due through this means.
The Stevenson copyright stamps were produced and issued by the Society, commencing in 1925, and continued until 1944.
In this time it is estimated that around 1 million of various values
were issued. Values ranged from 3/10d up to 1s6d and represented 10% of the retail price, as per the UK Copyright Act of 1911.
...
These are not postage stamps,
but "copyright stamps" which were pasted into RLS books.
They were usually attached at either the top or bottom inside of the
back (or rarely, the front) cover of Stevenson's books, and were for the collection of royalty fees. The 1912 General Regulations allowed for the collection of copyright royalties on published works by means of stamps.
research acknowledgement Blair rcsd
