55f (B3c) 1915 1d on 10pf carmine Yacht overprinted "C.E.F.", ERROR - "1 d." double, scarce as only 20 examples were printed, light hairline gum crease, ex-Dr. Bratzel collection, with BPA certificate, OG, HR VF appearance (Scott Retail $2,250.00) (Image)

...(Photo) SG $2,600.00

55g (B3ba) 1915 1d on 10pf carmine Yacht overprinted "C.E.F.", ERROR - surcharge double, one albino, scarce, OG, NH SUPERB (Image)

...(Photo) Net Est $600.00

58b (B6b) 1915 3d on 30pf black and orange on buff Kaiser's Yacht overprinted "C.E.F." (SG Type 1), ERROR - surcharged triple, two albino, rare, only 50 printed (12 of which are in one collection), this example is row 2, pos 4, ex-Robert Gibbs, with photocopy of the BPA certificate for a block of 24 that this is from, OG, NH SUPERB (Image)

...(Photo) Net Est $1,850.00