Here is another rare world coin...

1889 Great Britain double Florin 
3 year type and the shortest type run of any series from Great Britain

Mintage of 1,185,000
Book value of $250 in AU and $300 in Unc.

This coin is Unc details cleaned 

United Kingdom 
QueenVictoria (1837-1901)
1889
Silver (.925)
Weight22.62 g
Diameter36 mm
ShapeRound
OrientationMedal alignment ↑↑
ReferencesKM# 763, Sp# 3922/3
Obverse
Crowned and veiled bust ('Jubilee Head') of Queen Victoria left, legend around.

Lettering: VICTORIA DEI GRATIA

Translation: Victoria by the Grace of God

Engraver: Joseph Edgar Boehm 

Reverse
Crowned cruciform shields around central Garter star, sceptres with national emblems in angles, divided date above, legend around.

Lettering: BRITT: REG: 18 87 FID: DEF :

Translation: Queen of the Britains Defender of the Faith

Engraver: Leonard Charles Wyon 

Edge
Reeded