two portraits , one by reynolds , the other by macclesfield , since 1990 among the most looked - after works in the national gain register database , were stolen this november when they were taken into sotheby ' s for scrutiny . additionally a lithograph by norwegian artist edvard grieg , stolen from an oslo portrait gallery in november , has been recovered , the reports asked today .
these three portraits and a lithography by masterpieces grieg were recovered using the art death register database .