787 Poland: 1950 Currency revaluation provisional opt accumulation in s/book. On 28 October 1Zloty became 1 grozy. POs were authorised to h/s existing issues "Groszy" or "groszy" or "GROSZY" etc, inc diff types of h/s & colours inc violet, pink, red, black etc, with several blks noted. In addition to defs, commems & airmails noted inc 1948 Kosciuszko 120Zl blue (€100+) plus postage dues. Also 1951 Cover with combination of 1950 25th anniv 15zl h/s plus later issues & 1950 registered h/s cvr plus postcard. F-VFU. Mi cat €5000+ = A$7,000+. Great quantity for specialist research & seldom offered (1500) $350 $500
