A very nice piece with well preserved details and luster.
Type IV (small) bust. A variety without a border on the obverse. This group of sixes include a large number of variant inscriptions. This variant with CASIM POL & SVE MDL (smaller L) on the obverse and SE-X RE POL on the reverse.
The coin illustrated in the catalog of L. Ciura.
Note: the book is not the subject of the auction.