Elizabeth I, AR Portcullis Halfpenny (1582-1600). Fifth issue of 1582-1600, sterling fineness. 

Portcullis, crescent above.
Long, Moline cross with incurving end hooks, connected triple dots in two quadrants and single dots filling the other two. 

Seaby 2581. 

Courtesy Ira & Larry Goldberg Auctioneers, Beverly Hills, CA. www.goldbergcoins.com
Sale 31: The Pre-Long Beach Auction May 30 - June 1, 2005, lot 2128