I wanted a tobacco suede cap toe derby similar to the one in this AA picture.
Richard was somehow able to get that style on a 6038L last for me; here are the final specs.
One pair of (as) Waterloo, Plain Cap Toe Derby with Single Row of Punching on the Toe Cap.
UK Size 10 1/2, fitting 6.
Colour, Highland Fox Suede.
Lining, Vintage Green Calf Lining.
Eyelets, Blind Eyelets.
Laces, Dark Brown Laces.
Welt, 270 Degree Flat Welt in Dark Brown Finish.
Sole, Double Leather Sole but with ‘Forepart Thru’ only, and Closed Channel Stitching.
The "forepart thru" is Trickers way of describing a double to single leather or haf sole.