The only known photo of a live Tarpan at the Moscow zoo, published in 1884.

English: Tarpan at the Moscow zoo. This male tarpan was then 18 years old, dark grey with white spot on front left tibia. Mane was very long; the tail was cut by keepers. The tarpan was caught in 1866 on Zagradovsk steppe and lived until 1880 in Novovorontsovka, until it reached Moscow zoo on May 29th 1884. He was castrated from 3 years of age, and possibly not a pure specimen. His height at withers was 133 cm.

Published 1884

From: http://www.flickr.com/photos/europeanwildlife/5640140518/in/photostream