Anne, a uniface oval portrait medallion in translucent pressed horn, after Jean Obrisset but unsigned, portraying the crowned and cuirassed bust of the Queen left wearing collar of the Order of the Garter, 76 x 88mm (maximum vertical height of the portrait 51.5mm), reverse bearing an old label "Queen Anne 1707-09", very fine; in an old gilt frame (this with some losses) (£150 - 200)