Articles

Studies and finds on the Hradčany issue — my own and colleagues’. Most concern particular stamp fields and how a flaw on them developed over time.

Articles on the values of the issue

• 5h blue-green – retouch at 100/I and the (non-)Monograph flaw at 90/II and 100/II 5h
  24 June 2017
• 5h light green – spot at 46/1 (the “grape cluster”) 5h
  11 December 2016
• 5h light green – spot at 27/2 (the “zeppelin”) 5h
  10 December 2016
• 10h red – development of field 91 of plate IV 10h
  30 April 2016
• White spots at 60/2 of the 100h 100h
  25 May 2016
• White spot at 6/2 of the 120h 120h
  21 March 2015, updated 17 November 2015
• White spot at 97/1 of the 300h 300h
  14 November 2015
• 500h – identifying stamps with spiral type I from plate II 500h
  17 March 2015
• Smears and spots on Hradčany stamps
  17 November 2015

Articles on the 15h

The 15h has a site of its own; these articles live there.

• 15h – cracked printing plate at 11/II 15h
  30 December 2014, added to 24 June 2017
• 15h – damaged frame at 60/VI 15h
  28 October 2016
• An imperforate 15h from plate VI postally used — Košice 2, 13 July 1920 15h
• 15h cover – a treasure for a song 15h
  21 January 2017
• 15h (7) – smears and spots 15h

Further texts on the 15h — on perforation, production flaws and proofs — are on the 15h site.