1860 10k Dark blue used with boxed (6-line) numeral ‘1’ (round bottom line of 1) of Varszava showing varieties: slight ‘K’ damage in KOP and damage in bottom right blue inner frameline corner, very fine example and scarce postmark (Image)

1860 10k used with 4-ring numeral ‘1’ of Varszava showing variety: blue frame print at left top and bottom strongly damaged making the ’10’s nearly invisible, a very fine example of this variety, old signature ‘N.J.’ (Image)

1864 10k Blue & rose tied to cover to Saint Petersburg by 4-ring “DP” of Dworcez Praga alongside cds of same (Warszawa Praga railway terminal), very fine cover (Image)