5 r., horizontal marginal pair tied to commercial airmail cover from "BAHRAIN 17 NOV. 45" to San Francisco with adjacent red "O.A.T." (Onward Air Transport). A very rare usage of these stamps and highest recorded franking of this issue

1948/49, ½ a. (2), 1 a., 1½ a. and 2½ a., tied by 3 strikes of cds. "EXPERIMENTAL P.O. K-121" (Muharraq post office) to airmail cover to England; one ½ a. slight transportation marks, otherwise fine. The experimentals K121-postmark is the rarest postmark of Bahrain, according to Donaldson just one further cover has been reported

1893, handstamp “40 PARAS” on ½ d. vermillion tied by cds. “BRITISH POST OFFICE STAMBOUL c FEB.28.93” to cover to London with arrival mark. The cover is vertically folded, the stamp is in fine condition, signed Pavoille, Paris

1857, Victoria 7½ d. green, unused (regummed), rich color and strong impression, ample margins to clear at right, otherwise fine; a scarce stamp. Certificate Greene Foundation (2016)

1851, 1 s. reddish mauve on blued paper, fresh color and ample to mostly good margins all around, used with blue oval of bars, a fine and very rare stamp, certificate BPA (2009)

1860, envelope to Colchester, England, with red despatch cds “HONG KONG PAID C JY 7 60” (Webb type 14) and manuscript “6” (pence) prepayment, with reverse transit and arrival cds, fine, in addition a second cover from the same correspondence with similar red “HONG KONG PAID C JA 29 60” with reverse transit and arrival cds, the envelope a little tatty. A scarce duo

1879, postcards with postcard stamps 3 c. and 5 c., unused, very fine

1852, Scinde Dawk ½ a. blue, nice fresh colour and good margins, lightly cancelled by diamond of dots. Very fine and choice. Signed Heddergott with certificate (1995)   
 

Die I, ½ a. blue, dry print, vertical strip of 4, good to large margins, each stamp with clear numeral "1" and additional manuscript "Stamped", light pre-fold between third and fourth stamp, otherwise very fine. Scarce multiple. 
 
 

Die I, ½ a. blue, ample margins, tied by dotted "39" two envelope with reverse side red boxed "ONGOLE" with manuscript date "16-2 57" two envelope to Secunderabad, with red arrival mark and adjacent delivery mark "2d D" 

Die I, ½ a. blue, good to large margins, tied by diamond of dots to slightly reduced entire letter with adjacent red c.d.s. "UMBALLA 10 FEB. 1856", to Jullundur, with arrival mark 
 

Die I, ½ a. deep blue, block of 4 with underinking at right, good to large margins, each stamp with clear diamond of dots and the right stamps with additional part of red handstamp. A very fine and rare block. Signed Georg Bühler with certificate (1968)