Weak surface.
The shekels with the crowned letters S-R, minted between 1622 and 1623, are coins attributed to Warsaw, according to current findings. The mysterious mint was known to numismatists as early as the 19th century, but it is still impossible to determine where it was located, in what years it operated and what coins it minted.
A variety with the date inscribed 16-ZZ, with a crown above the Sheaf.