I don't have Pattern Book XI in a 'separate' form, and that's no doubt where pattern 1990 occurs. It's just possible that the reason for the scarcity of this boot/shoe, and the apparent un-Registered design, may well be that it was thought an unsuccessful item originally. The other three Sowerby shoe patterns from the late Victorian period - Nos. 1921, 1927 and 1948 are roughly similar to each other, but as we've said nothing at all like this one.
I'd guess this is a good piece to have, and quite scarce.
