Art Deco vase - enamel on stoneware

Hello :) just took a 1€ punt on this little vase today - initially thought modern but base and interior showing some age. Google images matching up with 1920s stoneware but it's not marked very well sadly, just a few letters that I can't make out.








Of course every chance it is modern but I'd love to hear some proper potties' thoughts! If anyone has clues as to where and when it was made i would  be so grateful :-) Thanks for looking !