1919, Estonia Local, Russian 15k stamp overprinted in violet, Russia Sg:RU 100 - overprint in violet by hand stamp at Tallinn GPO. Mi: 7A, Sc. 15, Yt. 28, Sg. 4g. Stamp (bottom of sheet) on  a small piece, postmarked  ' MANSPAA AG  V. 19' 1919'