Incidentally, in the thread above there was a short discussion about the distinctive shape of the handles. Very "Chippendale-esque"! Certainly various makers used that distinctive squared off shape - but the most unusual example of it that I have seen is on a Riihimaki (Finland) sugar and creamer set that was made around late 1920-1930. An even more unusual characteristic of this particular set is that the pattern on the body of the items is a fine raised stipple and a floral motif, very much in the style of some Imperial (USA) glass patterns.
I'll try and post a photo sometime. It's shown in our third book on page 81 and we named it "Double Starflower".