Interesting that the header says "Created and Designed in Great Britain", yet the side selvages say "Printed in USA" and the copyright is 1959, Springfield, Mass.
Upon further checking these are the same cinderellas currently offered by Mystic Stamp Company with the following description:
Quote:
"Sci-Fi" interplanetary essays – or Cinderellas – created for H. MacIntosh, the owner of Tatham Stamp & Coin and Avalon Stamp Company, both of Springfield, Massachusetts. MacIntosh is remembered for creating controversial Confederate States counterfeits.
http://www.mysticstamp.com/viewProd...sp?sku=MA311