Mafeking – 1s on 4d Green and Brown double overprint (serif and sans serif)
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The British Bechuanaland 4d. was surcharged 1s. with both types of font as a double surcharge. This is a known practice of some jobbing printers of that era deliberately overprinting a subject twice with either different type or different inks. These 1s. on 4d. doubles are listed as SG11ab and the majority of the known examples of this were discovered in the Baden-Powell family philatelic material.
History: Harry Birkhead collection (Spink March 2014 lot 185 sold for £6’000+20% commission)
History: Harry Birkhead collection (Spink March 2014 lot 186 sold for £4’000+20% commission)
History: Grosvenor Philatelic Auctions (Richard Tompkins collection) Nov 2006 lot 1325 realised £4’200; David Feldman SA May 2009 lot 30117 realised €2’600;
Cert. Scheller (2010)
History: Gaertner May 2016 lot 214 estimate €1500, sold €1’050 plus commission