(#TUX-1)  This is a vintage tailcoat, Christian Dior Monsieur, dark gray with black pinstripe
Size 50R, 42" long, 20" across shoulder seams, wool, three button (tailcoats do not button) and double buttons on the back.  (see matching pants, vest, bowtie in my ebay store)

FORMALWEAR, MEN'S
CHRISTIAN DIOR, VINTAGE 1990
They have been gently used, kept in non-smoking, air-controlled environment