Beware information supplied by sellers of negatives!
This shot which I think is quite a scarce one is dated 1925 which is an impossibility as the entire class had been moved to the West Riding of Yorkshire some decades previously. However, let's not allow that to detract from this fine shot of GNR Ivatt R1 class 0-8-2T No. 123 in immaculate condition photographed at (allegedly) Woodside Park station whilst on a New Barnet service. Date? more likely to be 1905 than 1925.
The only other data I have is that 123 as LNER 3123 was withdrawn from service at Colwick shed in 1928.