Connections Hint Today Fri, Mar 7 #669

Need help with Connections puzzle #669 on Fri, Mar 7? Get your daily connections hint today! Find the hidden links between these 16 words: LABEL, MARK, SEAL, STAMP, BROWN, CASH, DYLAN, MERCURY, BUFFALO, HELENA, IRVING, PHOENIX, AMPLE, DOTE, LUMON, POACH