Rare map of the continent of Asia, published by Walch.
Provides a nice look at the Asia at the close of the 18th Century, with significant revision to the coastlines or Russia and Chinese Tartary over the most recent decades.
The shapes of the Philippines and SE Asia are now well defined.
Johann, or Johannes, Walch (1757-1816) was a painter and engraver. He was well-known for painting miniature portraits, having trained in Geneva, Venice, and Rome. Walch published several atlases and sheet maps. As with his atlases, many of Walch’s maps were reprinted after his death.