Muttenz commune (Basel Land half canton, Switzerland)

Azure, issuant a Castle with three Towers Gules windowed Sable from which a Semi-lion rampant issuant double-queued of the second.

Blazon by Mühlemann (1991): In Silber drei aus dem unteren Schildrand hervorbrechende, miteinander verbundene rote Zinnentuerme und ein aus dem mittleren Turm wachsender roter Loewe.

Translated: Argent three connected Castle Towers breaking from the base Gules and a Lion Gules issuant from the middle tower.