GB-672414 A Classic Locomotive of Northern Ireland - the UTA SG3 No.35

In June 2013, a set of 4 stamp cards featuring Classic Locomotives of Northern Ireland was issued.  All four locomotives featured are steam locomotives.  This particular stamp card shows the UTA (Ulster Transport Authority) SG3 Class No. 35. Part of a single batch of 15 locomotives constructed in 1920-21, the SG3 class was built in Manchester by Beyer, Peacock.

The SG3 is remembered as one of the most powerful steam trains of that time and it was often referred to as the ‘Big D’s’ reflecting the fact that it handled the heaviest goods trains on the GNRI (Great Northern Railway (Ireland)).

The UTA SG3 Class No. 35 could boast 191/2in x 26in cylinders as well as 24,107Ib tractive effort and 5ft diameter boilers making it a highly sought after steam engine of the time before it was then withdrawn from service between 1959 and 1965.

Source: http://blog.postofficeshop.co.uk/classic-locomotives-northern-ireland/

This postcard came from Sandra (10 July 2015) Postcrossing.
Sandra also sent a further postcard (17 August 2015) DS - this one shows the entire set of stamps depicting Northern Ireland Classic Locomotives.