1889 2k Green, horizontally
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Thank you for contacting Mearto with your appraisal inquiry. Based on the photographs and description provided, the subject of this appraisal is an 1884-1888 Russian 2 Kop postage stamp in the perforated variety. The stamp bears the coat of arms of the Russian empire with a horizontal watermark. The piece is dated to 1884 to 1888 as there are no thunderbolts across the horns within the oval. The stamp is slightly off-center horizontally and the cancellation is moderate in that it covers some design elements of the stamp, so the piece is estimated to be in Fine condition.
Unfortunately the piece appears not to have errors that would make it a particularly rare piece and it was produced in the tens of millions. As for current value, similar 1884-1888 Russian 2 Kop used stamps can be found in this condition for a couple dollars per stamp on online auction sites. In consideration of the factors noted, a Fair Market Value of this piece would be estimated at $5 to $10.