These planes can be found as being available from William MARPLES going back to 1862 when they are listed for sale at 1/8d each. At that time there is also listed an Old Woman’s Tooth plane [OWT] described as – ‘Smoothing Plane Way‘, but I have no idea what the ‘Way’ meant.
By 1873 the basic plane [London/Router Pattern] has been numbered as #904 at 2 shillings a piece.
The 1897 listing shows both a #1032 OWT [Smoothing?] at 2/9d each and a #1033 ‘London Pattern‘ at 2/9d each. The ‘London Pattern‘ was synonymous with ‘Router Pattern‘. They are both here listed under ‘Sundries‘.
The number changes in the 1909 Catalogue having the ‘Router [London]Pattern’ as #2861 at 3/3d and the ‘Smoothing Pattern’ #2860 at 2/9d.
The 1921 Catalogue only lists the #2861 ‘Router Pattern’ plane at 3/3d. Maybe WW1 affected the production of the ‘Smoothing’ OWT, as it is not shown.
But by the 1928 Catalogue both varieties are shown, only that the ‘Router Pattern’ is still listed as #2861 6/6d with a 5/8″ iron and the ‘Smoothing Pattern’ is again now shown, but as a new number #2862 at 5/6d with a 5/8″ iron. { I do not know why the 2862 should be sold for less than the 2861, because to me the former looks to be the more labour intensive to produce.}
The 1938 Catalogue only shows the #2861 ‘Router Pattern’ as being available.
By the 1959 Catalogue this below is the only listing, and you will note that the blade(s) supplied have been increased to both 5/8″ and 1/2″.
The last listing of these planes can be found in the Price List of April 1962 to the 1959 Catalogue , wherein the #2861 is shown as still being available at 31/6d.
Here is a ‘London Pattern‘ or ‘Router Pattern‘ Old Woman’s Tooth Plane:
The ‘Smoothing‘ Pattern: