Auction 90, Session 1 - Worldwide Rare Stamps and Postal History
Lot 431:
1967, Baby Sisters, experimental test booklet pane of 10 printed by British American Bank Note Company when developing their 1967 Centennial Issue booklets, the left stamps are printed in dark green and the right stamps in bright blue, no gum as produced, NH, VF, Est. $200-$250
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