Numeral cancellations of the British Empire
Heins, H. H.(Henry Hardy)
Horowicz, Kay.
London Robson Lowe
1979
Previous ed.: 1967
Text on inside cover
Includes: A glossary of abbreviated handstamps / compiled by Kay Horowicz. 3rd ed. 1980
Cancellations (Philately)
Hand stamps (Philately)