טיוטה:בולים מהונגריה עם חירור משולש

לקריאה נוספת

• SCOTT - 2019 Classic Specialized Catalogue of Stamps & Covers - 1840-1940,

קישורים חיצוניים

• Hungarian Stamps With 3 Holes
• Hungary Central 3 Hole Perforations
• Hungary 1916-1940
• Leslie S. Ettre, STAMPS OF 1921-24 WITH THE THREE-HOLE PUNCHING FORMING A TRIANGLE, THE PERFINS BULLETIN, March 1971
• Leslie S. Ettre, STAMPS ISSUED WITH THE THREE-HOLE PUNCHING FORMING A TRIANGLE, THE PERFINS BULLETIN, May 1971
• Leslie S. Ettre, REGARDING THE HUNGARIAN STAMPS WITH THREE-HOLE PUNCHING, THE PERFINS BULLETIN, June 1971
• Leslie S. Ettre, HUNGARIAN Stamps With Official Punching - Some Corrected Data, THE PERFINS BULLETIN, November-December 1974
• Gábor Voloncs, THE AUT. PERFORATED 10-FILLÉR STAMP OF 1906, THE NEWS OF HUNGARIAN PHILATELY, Volume: 32 / Number: 2, Apr-Jun 2001, pp. 7-11
• AUT. stamp should have period after T