Thanks Marcus,
Did they also make a vase in this pattern? Cappa illustrates such a piece, i.e. same fish & wave design but tall sided as a vase and attributes it to Sevres (see Le Genie Verrier de L'Europe, 2nd Ed. no.744, p422). I've always questined many of the Sevres attributions in the book as there are other misattributions (see no. 745 which is a Walther float bowl).
Steven