FLOAT
The 1857 Tiflis city post 6-kopeck stamp - city arms beneath a double-headed eagle - one of the few surviving examples (this scan traces to the Agathon Faberge material), not necessarily the ex-Mikulski copy priced by this constituent.

Tiflis City Post Stamp ('Tiflis Unica')

Maker
Russian Empire (Tiflis/Kojori city post, modern Tbilisi)
Year
1857
Rank
20 of 100

Tiflis City Post Stamp ('Tiflis Unica')

Tiflis City Post Stamp ('Tiflis Unica') by Russian Empire (Tiflis/Kojori city post, modern Tbilisi) (1857) is ranked 20 in the FLOAT 100 for Stamps. It sold for $700,000 on 5 October 2008. Regarded as the oldest stamp of the Russian Empire — issued months before the 1858 national issue — and one of only a handful surviving.

What is it, and why is it in the FLOAT 100?

Regarded as the oldest stamp of the Russian Empire — issued months before the 1858 national issue — and one of only a handful surviving.

6-kopeck, coat of arms of Tiflis beneath a double-headed eagle; ~5-8 known; ex-Zbigniew Mikulski

What is the best-sourced number for it?

Figure
$700,000
Kind
Realized at auction
Date
5 October 2008

David Feldman SA, Geneva, 5 Oct 2008: EUR 480,000 (~$700,000), the ex-Mikulski copy. The headline record; no newer public sale supersedes it.

This is a realized sale. Somebody paid it. Source.

How this is made

The figure
One reference price, taken from a named public source and shown with its own kind. FLOAT does not average it with anything or adjust it for time.
Realized or not
A realized price is a completed sale. A market asking price and a price-guide value are not sales, and are labeled as such wherever they appear.
Why no grade ladder
Most FLOAT 100 entries are individual objects. There is one of this, so there is no population and no spread across grades to show.
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2026-08-08