I see a nice Monzani flute was sold at the last H&G auction on March 14th. Hallmarked Silver keys box with grease pot - only 505 sterling
“Early 19th century rosewood and silver mounted flute by and stamped Hill, Late, Monzani & Co. 28 Regent Street, Piccadilly, London, also stamped Patent, no. 3195, with eight silver keys on wooden blocks, hallmark 1835, length 675mm, sound length 590mm, case (a.f)”
http://gardinerhoulgate.co.uk/Catalogues/mi130314/lot0443.html