Hi Helga,
as Anik says a nice fifties Skrdlovice bowl. These can be hard to exactly attribute sometimes as several Beraneks made similar pieces...... at a glance it could be Emanuel or Jaroslav as a design, the variation in hot worked techniques and also some non pattern book sizes, sometimes make an exact match more difficult............... someone on the board may track a match down for you but rest assured it is Skrdlovice, you have a decent collection of fifties Skrdlovice now!
Robert (bOBA)