Imperial Russia - Postal Stationery items

Imperial Russia - Postal Stationery items
EARLY STATIONERY ENVELOPES - COLLECTION IN COVER ALBUM: 1848-1909, 37 items, starting with City Post envelope of 5+1k red lilac, representing State Post envelopes of 20k blue of the 2nd issue (SK #5), 10k black of the 4th issue (#8 tiny flap tear), 10k, 20k and 30k of the 5th issue (#10-12), small sizes unissued envelopes of 20k (#21 var) and many more, occasional flaws possible, but generally nice and fresh unit, one cover is used, all others - unused, mostly VF, Russian Standard Cat. value is about $2,000