By 1904 De Seauve was operating alone from the same address with the logo AD. Some cards have printed "A.D" followed by the address, some the AD logo as in card AD 327, assuming that this is De Seauve.
In 1905 Dubray reappears, operating now from 23 boul. des Italiens, with a logo that looks like DA. Both the example cards carry adverts, the second one as part of an advertising series.