Newmarket is the most classic side-gore boot I know.
Very often it is made in formal makeups and the 82-last (in the pictures), or the 202-last. For side-gore boots, I have a strong preference to soft-square lasts, and I honestly don't think I've ever seen Newmarket on 606.
Made on the 606-last, available in any width (pictured on the Dover below) Goodyear welted with flat welt.
Shoe trees included.
Full price is 14 875 NOK (11 900 ex VAT), including shoe trees and shipping. (Norwegian Post)