3610 was a 36xx built 1902 and rebuilt with its long cone D3 boiler in June 1910. Interestingly six of the class were in Devon in 1903 including 3610 and they worked the main line from Newton to Exeter. Otherwise 3610 appears to have always been a London Division engine and no records of it being one of the S Wales engine are mentioned in the 'allocations and work' section of the RCTS book