50 Heller postal stationery, unwritten outward portion of 50 Heller reply card (Czechoslovakia no. P 38) with genuine Reichenberg overprint, special "Reichenberg 1/..../-8.Okt.1938/...". No separate catalogue number yet; current Michel Postal Stationery catalogue 2025/2026 records only one, presumably this, card with overprint on P 38, thus unique. Brunel photo certificate