Ukrainian, Railway Seal, Image & Found by Dave Clarke.
Found in New Ash Green, Kent, 26mm, 20.91g
(C?), *ст.?пола around // ю.3 / 10 IX(908 on its side)90 / ж,д.
Ukrainian / Russian railway seal. CT. ?пола = Station ?pola. Next line is a date.
From Paul Cannon, "I think it reads:
CT. ШПОЛА for Shpola Station; a town in Central Ukraine. The station opened 23 November 1876 and was the final station on its branch line until 1891 when it was extended. The other face can I think be expanded to ЮГО-ЗАПАДНАЯ ЖЕЛЕЗНАЯ ДОРОГА for South Western Railway Company. See Wikipedia, Southwestern Railways"
From Ged Dodd, "C = Selo = village / CT = СТАНЦИЯ = Station
ШПОЛА = (SHPOLA) = Shpola Village Station in Ukraine
ЮЗ / ЖД = Yu.Z.Zh.D = ЮГО ЗАПАДНЫЙ ЖEЛEЗHAЯ ДOPOГA
South Western Railroad
10/IX/1890 - (908) = 10th September 1890 - 908 tag number
see IDS812 The PeaceHavens Project, Seal Numbers 801 - 900."