1885/96, 3 p. orange, Type B, two copies, and 2 a. carmine, tied by "PAONTA / SIRMOOR STATE 28 OC 01" squared circle cancel 1901 to part envelope, registered from Paonta to Nahan  with "SIRMOOR STATE / NAHAN 29 OC 01" delivery cds on reverse. Internal franked Sirmoor covers are virtually unobtainable because the Maharaja of Sirmoor had issued strict orders to have the stamps removed from all articles of mail prior to delivery. Only a handful of such Sirmoor covers exist, the majority of franked Sirmoor covers are combination covers addressed to areas outside Sirmoor State. BPA certificate

1896, 1/2a yellowish green, tied by "SIRMOOR STATE / NAHAN / 15 JL 99" cds. to India QV 1/2a postal stationery envelope, rare. BPA certificate

Waterlow Proofs of 1899 complete set of four each in a corner marginal block of four each with a 3mm security punch hole from the unique sheet that was retained in the Waterlow archive.  Variously stained and without gum, certificate ISES 2021.

1892-97  3p orange overprinted "On S S S" with error overprint inverted. ISES certificate (SG value £900)

Waterlow Proofs of 1896-97 set (missing 1 anna) each in a corner marginal block of four (printed margin missing) each with a 3mm security punch hole from the unique sheet that was retained in the Waterlow archive. Variously stained and without gum.

3 pies orange SG Type "B" mixed Machine printed and handstamped; "On" SG Type 19 machine printed and "S S S" without stops handstamped SG Type 13. Unrecorded. Block of four, right stamps hinged, left stamps never hinged

3p chocolate from the 1st Printing handstamped "ON S S S". An extremely rare stamp, not listed in SG

1892/97, "On S.S.S." in type 13 on Elephant 6 d. green in vertical pair, imperforated between, unused with part original gum. A unique item. This stamp has not been listed so far in Stanley Gibbons, it's status is unknown. The pair without overprint already is a great rarity (SG23a). Certificate BPA (2013)