I have had just had a look in the book (Dartington Glass The first Twenty Years) and there are five (not 4) items with this fine stippled texture. Four 'textured flower boxes' (or vases

) FT191/2/3/4 and the textured candleholder FT195.
Sue, I think yours is square if I remember correctly and so at that height will be FT192, FT191 is wider than it is deep and is more of a 'trough'. FT195, the candleholder is the same basic shape as
this bunch but smaller in size and with the same textured as the flower boxes.
John