1915 CEF 1s opt Yacht 1Mk carmine, variety 'inverted S', plus with strong opt offset on back. Superb fresh MLH. Mi 10I, SG B10a cat £1000+, plus premium for opt offset. Only 100 printed (and of these tiny number with opt offset) & desirable positional example. BPA photo cert. (P) (Image1)

Estimate AU$900

1915 'C.E.F. 3s' opt Yacht 3mk violet-black, error 'S broken at top'. Superb fresh MNH, pristine never hinged original gum. Mi 12I cat €1500, SG B12b cat £900 for M, should be at least double, £1800 MNH. Only 99 printed of variety & certificate can be obtained on request. (P) (Image1)

Estimate AU$1,200

1915 Stampless cover endorsed 'On Active Service Stamps unavailable', with 'Duala 11 6 15' code a cds. To Togo with Lome arrival b/s. Arge cat €200 for this cds on German period cover. Rare usage. (P) (Image1)

Estimate AU$300

1919 Registered cover franked CEF opt ½d on 5pf, 1d/10pf black opt, 2d/20pf & French Occup opt 15c, tied by 'Buea Kamerun 18 6 19' cds, with provisional reg label 'Buea British Kamerun' h/s. To Switzerland, b/s Victoria, Liverpool, London & Bern. SG 2-4 etc cat £47, Mi 2-4 etc cat €180 - both as loose stamps, unpriced on cover. (P) (Image1)

Estimate AU$120

1919 Registered cover franked CEF opt ½d on 5pf strip of 3, 1d/10pf black opt, & 2d/20pf, tied by 'Victoria Cameroons 20 JU 19' cds, with provisional reg label 'Victoria (Cameroons)' h/s. To Switzerland, b/s Victoria, Liverpool, London & Bern. SG 2-4 cat £62, Mi 2-4 cat €215 - both for loose stamps, unpriced on cover. (P) (Image1)

Estimate AU$120

1919 Registered cover franked CEF opt ½d on 5pf, 1d/10pf black opt, 2d/20pf & French Occup opt 45c, tied by 'Buea Kamerun 14 7 19' cds, with provisional reg label 'Buea British Kamerun' h/s. To Switzerland, b/s Victoria, Liverpool & Bern. SG 2-4 etc cat £47, Mi 2-4 etc cat €180 - both for loose stamps, unpriced on cover. (P) (Image1)

Estimate AU$120

1919 Registered cover franked CEF opt ½d on 3pf & 3d/30pf, plus Nigeria KGV 1d, tied by 'Victoria Cameroons 10 OC 19' cds, with provisional reg label 'Victoria (Cameroons)' h/s. To Switzerland, b/s Victoria, London & Bern. SG 1, 6 etc cat £115, Mi 1, 6, etc cat €115 - both for loose stamps, unpriced on cover. (P) (Image1)

Estimate AU$150

1919 Registered cover franked CEF opt ½d on 5pf, 1d/10pf blue opt, 2d/20pf & Nigeria KGV 1d, tied by 'Victoria Cameroons 2 NO 19' cds, with provisional reg label 'Victoria (Cameroons)' h/s. To Switzerland, b/s Victoria, Liverpool & Bern. SG 2-4 etc cat £42, Mi 2-4 etc €75 - both for loose stamps, unpriced on cover. (P) (Image1)

Estimate AU$120