The design of a round medallion with a double circular border containing the following: (a) the phrase "100TH NAMM" in large print across the lower half of the medallion as follows: (i) the word "100TH" placed above and slightly left and the word "NAMM" placed immediately below and slightly right, each word extending past its nearest smaller inner circular border but ending before reaching the outer border, (ii) the right leg of the"A" in NAMM extending below the bottom of the word to touch the lowest center point of the inner circle, and (iii) the horizontal bar of the letter "A" omitted; (b) a large musical notation centered in the upper half of the medallion, consisting of an eighth note on the left connected to a sixteenth note on the right except that the round bottom portion of the notes are hollow being formed by the "00" in "100TH", the entire musical notation contained inside of the smaller inner circular border except for the upper right corner which extends past it just slightly; (c) the phrase "A Century of Making Music" in small print arcing around the top half of the medallion between the smaller inner circular border and the outer border; and (d) the numbers "1901 - 2001" in small print arcing around the lower section of the medallion between the smaller inner circular border and the outer border.