Between 22 and 24 cm across, made from 2.5mm thick steel with traditional rolled edges and domed centre. Solid riveted handle.
Weighs ~900 grams, very easy to move around quickly in armour.
Used for HMB / Buhurt / SCA / LARP / Reenactment. Expected to take a beating so you don't have to!
It has some minor wear and corrosion on it, but is in a very good condition for a buckler shield.