Hi this is the info I got from eBay
The Keeper 'Type 2' - Engineer Boots
Last : Kapak
Size: 43 (to be confirm)
Upper: Natural Oiled Horsebutt overdyed Brown
Lining : Tan Halflined
Midsole : Single
Outsole : Dr Sole Black Supergrip
Halfsole
Welt Color : Antique Brown Edge Color: Antique Brown
Welt Stitch: White
Construction : Flatwelt 270°
Toebox: Unstructured
Heels : Woodsman Heels
Elastic: Raw Brass
09:39
Here is the specification