The Commemorative Medal of the Reign of King Albert I was a 32mm in diameter circular bronze medal.

Its obverse bore the relief left profile of King Albert I wearing a military helmet adorned with a laurel wreath and a military overcoat with the collar up.

The relief inscription in Latin along the upper circumference is "ALBERTUS" and at the bottom, "REX" means "Albert" and "King". On the reverse, a large relief capital letter A under a royal crown between two vertical branches, oak at left and laurel at right, at the bottom, the years "1909" and "1934".