Blazon: Vert a water tower and on a chief argent three grenades gules
The grenades likely recall the region’s long history of munitions manufacturing, beginning in 1891 with the first state ammunition factory in Austria. The water tower in the arms was built in 1916. Such a depiction of a specific municipal building is common in arms granted in the later 20th century.
Count of Tresmes 1630-1648, duke of Tresmes 1648-1669 (1579-1670)
Blazon: Per quarterly I azure a bend argent* between two wyverns rampant or (Baillet), II or in the dexter corner of a chief gules an escutcheon of Montmorency, the dexter chief quarter argent a molet of five points sable (Aunoy), III or a cross gules between sixteen alerions azure (Montmorency), IV argent a chief gules surmounted by a lion rampant azure (Vendôme), overall in the fess point an escutcheon azure three dexter hands couped or surmounted by a quarter chequy of argent and the field (Potier)
*Although it is shown here as or, the blazon specifies argent.