Russian Empire #23. 1868
Russian Empire #24. 1868
Russian Empire #25. 1868
Russian Empire #26. 1868
Russian Empire #27. 1868
Russian Empire #28. 1868
Vertical laid watermark
All stamps were printed on white paper with a vertical laid watermark. That is the main difference with previous fifth issue (and slightly different perforation).
| # | Value | Description | ** | * | used |
| 23 | 1 kop. | Typo, white paper, harrow perf. 14½:15;, black & yellow | 300 | 120 | 15 |
| 24 | 3 kop. | Typo, white paper, harrow perf. 14½:15;, black & green | 500 | 150 | 15 |
| 25 | 5 kop. | Typo, white paper, harrow perf. 14½:15;, black & lilac | 10000 | 5000 | 50 |
| 26 | 10 kop. | Typo, white paper, harrow perf. 14½:15;, red-brown & blue | 500 | 250 | 40 |
| 27 | 20 kop. | Typo, white paper, harrow perf. 14½:15;, blue & orange | 10000 | 2500 | 10 |
| 28 | 30 kop. | Typo, white paper, harrow perf. 14½:15;, rose & yellow-green | 1000 | 500 | 50 |
Varieties & Errors
The 1k stamp, imperforate with inverted and shifted background, two copies, both with large margins all around, cancelled "Moscow, 1 September, 1872" and affixed on piece, a striking double error (imperf. and inverted background), only a few exist, these probably the finest known, with sharp impression, with Mikulski certificate. Sold on Cherrystone in April 2011 for $24,000.00.