In 1756, a design was developed of gold coins of low denominations (1, 2 of the rouble and poltina) for a limited purpose ("for the Palace use"). There are several types of test coins that are not included in seriou coinage.On the obverse
is a portrait of Elizabeth I, in profile, face to the right. In a circle the inscription - "Б•М•ЕЛИСАВЕТЪ•I•IМП•ИСАМОД:ВСЕРОС•"(stands for "the grace of God Elizabeth I Empress and autocrat of all Russias").On the reverse
there is a three-dimensional image of crowned double-headed eagle with outstretched wings sitting on a cloud. Above the eagle's head there is one cloud, and a large Imperial crown. In a circle the inscription (starting at the top) - " • МОН • ЦЕНА • РУБЛЬ • 1756"(letters converted basis inside).
There are also coins of this type with the monogram instead of a portrait.
Photo from the site: antikvarus.ru