(x) 1990 (June) Scientific Co-operation in Antarctica $1.51 imperforate miniature sheet pair from the foot of the sheet showing colour control bar, fine unmounted mint. BW 1481ba, $1500 Note: The imperforate miniature sheets are believed to derive from a single imperforate printer's sheet (42-on) which was sent to Moscow for colour matching, and which has subsequently come onto the philatelic market.
(x) 1990 (June) Scientific Co-operation in Antarctica $1.51 imperforate miniature sheet pair from the foot of the sheet showing colour control bar, fine unmounted mint. BW 1481ba, $1500 Note: The imperforate miniature sheets are believed to derive from a single imperforate printer's sheet (42-on) which was sent to Moscow for colour matching, and which has subsequently come onto the philatelic market.
.jpg "Quelle: Christie's")
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
