This coin is in great condition given its age and history. The pictures show only minor marking with a good clean solid rim and sharp details.
Prior to German unification the Vereinsthaler or union thaler was a standard silver coin throughout most of the German States as well as Austria.
The previous Thaler was based on the Prussian version which did contain more silver. This particular coin here however contained 16 and two thirds grams of silver. A German Pfund was the equivalent of 500 grams and this coin has one thirtieth of a metric pound. This is shown on the coin.
On the Obverse we have the Laureate bust facing right and the legend with the words FREIE STADT FRANKFURT (Free City Frankfurt).
On the Reverse we have the crowned eagle with wings opened wide and the legend ZWEI VEREINSTHALER. XV EIN PFUND FEIN (Two Union Thaler 30 One Pound Fine)
Around the edge of the coin we see the words STARK IM RECHT (Strong in law).