1915 (Sept) 24 pesa vermillon with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 54)

Expertise: Cert. Holcombe (1991) as part of set with lots 81218, 81222, 81225, 81227 & 81234 (Image)

1915 (Sept) 24 pesa vermillon with only type M4 (G.R. / POST / MAFIA) overprint in black, unused single, fine and very rare (Gibbs 54) (Image)

1915 (Sept) 27 pesa with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA / 25 AU 16 cds, very fine and very rare (Gibbs 54)

Expertise: Cert. Ceremuga (2003) (Image)

1915 (Sept) 12 1/2h drab with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 55)

Expertise: Photocopy of cert. Holcombe (1991) as part of set with lots 81215 (which includes original), 81222, 81225, 81227 & 81234 (Image)

1915 (Sept) 12 1/2h drab with only type M4 (G.R. / POST / MAFIA) overprint in black, marginal unused single, one short perf. at top, very rare (Gibbs 55) (Image)

1915 (Sept) 12 1/2h drab with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA / 25 AU 16 cds, very fine and very rare (Gibbs 55)

Expertise: Cert. Ceremuga (2003) (Image)

1915 (Sept) 12 1/2h drab with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA cds, two slightly shorter perf. at bottom o/w fine and very rare (Gibbs 55) (Image)

1915 (Sept) 25h dull green with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 56)

Expertise: Photocopy of cert. Holcombe (1991) as part of set with lots 81215 (which includes original), 81218, 81225, 81227 & 81234 (Image)

1915 (Sept) 25h dull green with only type M4 (G.R. / POST / MAFIA) overprint in black, unused single, fine and very rare (Gibbs 56) (Image)

1915 (Sept) 25h dull green with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA / 25 AU 16 cds, very fine and very rare (Gibbs 56)

Expertise: cert. Ceremuga (2003) (Image)

1915 (Sept) 50h slate with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 57)

Expertise: Photocopy of cert. Holcombe (1991) as part of set with lots 81215 (which includes original), 81218, 81222, 81227 & 81234 (Image)

1915 (Sept) 50h slate with only type M4 (G.R. / POST / MAFIA) overprint in black, unused single, one short perf. at top o/w fine and very rare (Gibbs 57) (Image)

1915 (Sept) 1r lilac with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 58)

Expertise: Photocopy of cert. Holcombe (1991) as part of set with lots 81215 (which includes original), 81218, 81222, 81225 & 81234 (Image)

1915 (Sept) 1r lilac with only type M4 (G.R. / POST / MAFIA) overprint in black, unused single, some irregular perfs o/w fine and very rare (Gibbs 58) (Image)

1915 (Sept) 1r lilac with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA cds, very fine and very rare (Gibbs 58) (Image)

1915 (Sept) 1r lilac with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA 25 AU 16 cds, very fine and very rare (Gibbs 58)

Expertise: Cert. Ceremuga (2003) (Image)

1915 (Sept) 1r lilac with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, tied by bluish green MAFIA 1 SP 16 cds on small piece, very fine and very rare (Gibbs 58)

Note: Illustrated in Gibbs p.253

Expertise: cert. BPA (1958), Brandon (2004) (Image)

1915 (Sept) 25h grey with only type M4 (G.R. / POST / MAFIA) overprint in black, unused single, one short perf. at bottom o/w fine and very rare (Gibbs 59) (Image)

1915 (Sept) 25h grey with only type M4 (G.R. / POST / MAFIA) overprint in bluish green, used with bluish green MAFIA cds, very fine and very rare (Gibbs 59) (Image)

1915 (Sept) 25h grey with only type M4 (G.R. / POST / MAFIA) overprint in violet, mint single, very fine and very rare (Gibbs 59)

Expertise: Photocopy of cert. Holcombe (1991) as part of set with lots 81215 (which includes original), 81218, 81222, 81225 & 81227 (Image)

1915 (Sept) 27 pesa vermilion to 25h grey, complete set of six values with only type M4 G.R. / POST / MAFIA overprint in bluish green, tied by blue MAFIA 25 AU 16 cds on registered OHMS envelope addressed to MOMBASA, a few irregular perfs of no importance for this rarity, very fine

Provenance: Gibbs, illustrated in his handbook on page 254

Expertise: cert. Brandon (2004) (Image)

1915 Type M4 (G.R. / POST / MAFIA) black overprint on German East Africa 7 1/2h carmine, mint single, extremely rare, Gibbs recorded three examples with black overprint (Gibbs 60)

Expertise: Cert. Holcombe (1990) (Image)

1915 Type M4 (G.R. / POST / MAFIA) black overprint on 4h green postal stationery card addressed to London, extremely rare, Holcombe recorded only one other postal stationery card with this overprint (Gibbs PS2)

Expertise: Cert. Holcombe (1995) (Image)