Remaining Double-engined Sentinel locos

Other than 7109, there is only one other double engined Sentinel loco (works no. 9622) in the UK but it is very different in appearance. 

9622 in 2006 (Photo Aidan Stell)

9622 Date ? (Photo unknown source)

It was built in 1958 and was the last Sentinel steam locomotive to be made. In 2011, it was at the Teifi Valley railway in South Wales but not in an operable condition. 

There are two others similar to 7109 in existence in Brazil (works no's. 8398, 8399); they are still in use at the Amsted-Maxion Steel Works in Cruzeiro. No other double-engined Sentinels are known to remain.