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

Tiflis City Post Stamp ('Tiflis Unica')

Realized at auction: $700,000, dated 2008-10-05. This is a realized sale. Somebody paid it.

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
2008-10-05

A realized auction price is what a buyer actually paid on the date shown, including the buyer's premium where the sale reported it. It is the strongest kind of reference price, and it is a record of one sale of one object on one day, not a promise of what the next example will bring.

By reference price, Tiflis City Post Stamp ('Tiflis Unica') is number 21 of 99 in the stamps entries of the FLOAT 100. 75 of those 99 rest on a realized sale; the rest carry an asking price or a guide value, and each page says which. Rank within the FLOAT 100 itself (20 here) is editorial: how much an object defines its field, not price alone.

How this is made

The figure
One reference price, 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.
Archive
2026-08-08

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