13th century, Tibet, Shakyamuni, gilt metal with cold gold and pigments, is or was at the gTsug Lakhang, published by Ulrich von Schroeder.
13th century, Tibet, Shakyamuni, brass, is or was at the Jokhang, same as above.
Very few Tibetan sculptures show Shakyamuni doing the teaching gesture (vitarka mudra) with his right hand. The dharma wheel printed on the palm of his hand indicates that this is the historical buddha and not Amoghasiddhi, who occasionally does the same gesture. On the first example his left hand is held on his lap in the meditation gesture. On the second example his left hand is doing the calling-Earth-to-witness gesture which he normally does with his right hand.