@ Heinz 7 [#168]

Hallo Heinz,

im Internet findet man alles, ab 150 $:

https://www.philbansner.com/Philatelic-Literature/the_postage_stamps_and_postal_history_of_british_guiana/townsend__w___howe__f/

https://www.abebooks.co.uk/POSTAGE-STAMPS-POSTAL-HISTORY-BRITISH-GUIANA/18883208874/bd

Lg, harald