Series of 6 mazagran bistrot coffee glasses in thick glass 1900-1920

This beautiful series of six old coffee glasses is made of thick blown glass. Called mazagran, these glasses are blown and cut with regular ribs. This is a coffee glass used in bistros and cafes in the 19th and early 20th centuries. He received hot coffee, served at the counter. Some people present them as absinthe glasses, but it seems to me that the latter are more flared at the neck. This series is in good general condition and measures 15 cm in height X 7 to 7.5 cm in diameter. I point out small bubbles in the glass and traces of use.