Elizabeth I, 'Fine' Sovereign, 
1558-1603. Fifth issue, 1583-1600. Mintmark, scallop shell.
(1584-86). 

ELIZABETH : D' : G' : ANG : FRA ET HIB REGINA : (scallop shell) :, queen enthroned facing, holding fleur-tipped sceptre and cross on globe, portcullis below.
(scallop) A . DNO' . FACTV' . EST . ISTVD . ET . EST . MIRABIN . OCVLIS . NPS, shield of arms on large Tudor rose. 

Seaby 2529; Friedberg 209. 

Courtesy Ira & Larry Goldberg Auctioneers, Beverly Hills, CA. www.goldbergcoins.com
Sale 31: The Pre-Long Beach Auction May 30 - June 1, 2005, Lot 2122