SAAR (87var,96var) 1921 10c on 30pf gray green & brown, basic stamp with frame inverted, also 2fr on 5m yellow and violet, basic stamp with yellow color inverted in frame, surcharge shifted with bars at top instead of bottom, h.r., first one with a large thin, otherwise fine-v.f., signed Brun and Calves, with Kalkstein certificates, very rare, the latter listed but unpriced (Mi.72PFIV,81PFIII)