Literature. Bojanowicz, M.A., 'The Kingdom of Poland, Poland No. 1 and associated Postal History', hardcover, xv + 170 pp. + 40 plates, The Royal Philatelic Society London, 1979, limited edition No. 106/500. Out of print. Used.
A buyer’s premium of 25% plus a 20 SEK lot charge is added to the hammer price
