Mandolin made by Dimitrios Mourtzinos, with a string length of 330 mm. It has 8 mechanical keys with plastic round heads for an equal number of metal strings divided into 4 groups (2+2+2+2), out of which one of the thinnest strings is missing. The 3 thinner strings are plain, while the rest are wound. Its body is made of maple (kelebeki) and consists of 17 ribs and 2 side ribs. The instrument has: a wooden bridge, an ebony fingerboard with 26 frets played with the fingers and 6 inlaid disc-shaped finger placement guides made of shell, plain plastic bindings, an ellipsoidal sound hole, a plastic pickguard (made of celluloid), a wooden saddle with a fret and a metal string holder with 8 hooks.