Series of 6 antique coffee glasses

This beautiful series of six old coffee glasses is made of thick blown glass. Called mazagran, these glasses have blown and sized regular ribs. It is a coffee glass used in bistros and cafes in the nineteenth and early twentieth century. He received the hot coffee, served at the counter. Some present them as absinthe glass, but it seems to me that they are more flared at the collar. This series is in good general condition and measures 15 cm in height X 7 cm in diameter. I point out small bubbles in the glass and traces of use.