W. Grabowski Collection of Poland
October 20, 2004
| Images | Description | Current Bid |
 | Lot #515 1934 "Challenge" Overprints 1934 Challenge, 20gr olive and 30gr gray green, proofs of surcharge in dark blue, two different of last, fine-v.f., signed Rachmanow, with Dr.Kronenberg cert. (Fi.268-69, 7,500zl) P Catalog #C11-12P | Unsold |
 | Lot #516 1934 "Challenge" Overprints 1934 Challenge, 30gr gray green, red overprint inverted, fine used, signed Schmutz. A rarity Catalog #C12var | Price Realized $800.00 |
 | Lot #517 1934 "Challenge" Overprints Zeppelin Flights. 1933 2nd SAF to Brazil, machine canc. 395gr franking on front, Laziska Gorne departure, with red Berlin connecting cachet, fine and rare  | Price Realized $500.00 |
