1912 10pf-30pf set of three, also surcharged "Gelber Hund", two copies, some card offset and toning, otherwise fine, cat. $477 (Cat No. CL1-4) (Image)

Cat. $477, Est.US$100

1913 Liegnitz vignette, yellow brown on yellow, tied by "Flugpost A.D. Katzbach" 9.11.1913 hs, with corresponding German adhesive 5pf green canceled 9.11.13 on official picture postcard (slight abrasions on picture side), "Sachsen Hamburg-Amerika Linie" hs, v.f., rare, with 2000 Dr. Simon certificate, cat. €4000 (Cat No. Mi.11b) (Image)

Cat. €4000, Est.US$1,500