Octime vintage Arcoroc ebony black glass demitasse cups & saucers, never used

Octagonal black glass demitasse espresso cups and saucers, vintage Arcoroc - France glassware. This lot is four small cup and saucer sets, cups about 2 3/4" x 2 3/4", saucers about 5 1/4" in diameter. All are in excellent condition, clean and glossy, never used.