(C1) 6¢ orange Curtiss Jenny. NH top plate block of six, few natural gum bends and a blemish, inclusion speck in bottom center stamp, margin a bit reduced. Bright and fresh centered Fine. (Image)

(C5) 16¢ dark blue 1923 airmail issue. NH top plate block of six, few natural gum bends and blemishes, tiny tear in the top margin. Bright centered just Fine. (Image)

(C6) 24¢ carmine 1923 airmail issue. OG top plate block of six, bottom center stamp with expertly redistributed gum, the rest are NH. Fresh, centered just Fine. (Image)

(C13-C14) 65¢, $1.30 Graf Zeppelins. NH, with natural gum bends, fresh, centered Fine. (Image)

(C13) 1930 65¢ Zeppelin issue. NH fresh, centered F-VF. (Image)

(C13) 65¢ 1930 Graf Zeppelin issue. 2020 PFC (457182) states, “it is genuine, never hinged, Grade XF 90. (Image)

(C13) 65¢ Zeppelin issue. 2016 PSAG certificate (574158) states, “it is genuine unused og., never hinged, Grade 85J og., NH (Image)

(C13) 65¢ Zeppelin. NH, bright, centered F-VF. (Image)

(C13) 65¢ 1930 Zeppelin issue. 2004 PSE certificate (116433) states, “it is genuine unused og., previously hinged, Grade XF-Sup 95, Mint OG ph. (Image)

(C13) 65¢ Zeppelin issue. 2014 PSAG certificate (566675) states, “it is genuine unused og., previously hinged, Grade 95, og., PH (Image)

(C13) 65¢ Graf Zeppelin issue. 2010 PSE certificate (1228072) states, “it is genuine unused og., previously hinged, Grade XF 90 Mint, OG ph. (Image)

(C13) 65¢ 1930 Graf Zeppelin issue. 2013 PSE certificate (1264808) states, “it is genuine unused og., previously hinged, Grade Superb 98, Mint OGph. (Image)

(C14) 1930 $1.30 Zeppelin issue. NH bright, centered F-VF. (Image)

(C14) $1.30 1930 Graf Zeppelin issue. 2018 PSE certificate (1349608) states, “it is genuine unused og., never hinged, Grade XF 90. (Image)

(C14) $1.30 1930 Graf Zeppelin issue. 2020 PSE certificate (1371599) states, “it is genuine unused og., previously hinged, Grade XF 90 Mint, OG ph. (Image)

(C14) $1.30 Graf Zeppelin issue. 2020 PSAG certificate (566676) states, “it is genuine unused og., hinged, Grade 85 Mint, OG h. However the certificate fails to mention a spot on the reverse. (Image)

(C14) $1.30 Graf Zeppelin issue. 2019 PSE certificate (1357589) states, “it is genuine unused og., hinged, Grade XF 90 Mint, OG h. However the certificate fails to mention a small HR. on the reverse. (Image)

(C15) 1930 $2.60 Zeppelin issue. Left plate number single, NH with a small minor gum bend, centered F-VF. (Image)

(C15) $2.60 Graf Zeppelin issue. 2017 PSE certificate (1330537) states, “it is genuine unused og., previously hinged, Grade XF-Sup 95 Mint, OG ph. (Image)

(C15) $2.60 1930 Graf Zeppelin issue. 2016 PFC (534836) states, “it is genuine previously hinged along left margin, Grade XF 90. (Image)

(C15) $2.60 Graf Zeppelin. OG., natural gum bends, vlh, bright, centered Fine. (Image)