An uncommon Sowerby pattern 1337 basket shown on page 2 of their pattern book XI of 1885. (Permission for the re-use of these images on the GMB granted by Andrew Wilkin).
The quatrefoil basket 'body' bears the impressed peacock head trademark and an indistinct diamond registry date mark.
From the pattern number and the style, I imagine that the design was probably registered some time in mid- to late 1878. Does anyone have a similar basket bearing a clear date mark, please, so that I can trace the corresponding RD number?