Rare Russian coins - Gold "Elizabeth s zolotoy"

"Elizabeth s zolotoy",— non approved pattern imperial (10 rubles) designed by Benjamin Scott in 1755 (a unique specimen).
Imperial with a special portrait of Elizabeth Petrovna engraved by Jacques-Antoine Dassier.
This portrait is to be found only on the coins struck before 1757.
Diameters: 32 mm and 32 mm.
The Hermitage Museum