It would appear that the dawn of a new millennium is no obstacle when it comes to finding exceptionally rare machines. Bernard Williams' new addition is surely proof of this.
The machine was manufactured by Newton Wilson of the UK during the 1870's. The main superstructure is that of the famous Princess of Wales model (also featured on this site). The most obvious differing feature would be the base casting. Instead of the usual Prince of Wales Feathers relief at the corners, we are treated to a motif of St. George slaying the Dragon. The central section proudly sports its title "England's Queen".
The machine is no simple variant, however, for below the stitchplate lies this model's claim to fame, the relevant patent being initiated in 1871.
An intersecting cam (see photo) is employed, within which a contoured stud fixed to the feed bar is allowed to run. The motion created forms a zig-zag or herringbone stitch. Adjustment to the extent of this action is achieved by a somewhat crude thumbscrew operation.
Marketed concurrently with the standard big-selling Princess of Wales, the England's Queen carried a one guinea premium.
It's hard to judge whether it was the higher price, or its mechanical inadequacies that led to its commercial failure. This is only the second extant example I have observed - a rare machine indeed!

Bottom illustration :- taken from original advertisement 1875.

G.D.
December 1999.