James I, Rose-ryal (30 Shillings), James I, 1603-25. Third coinage (1619-25). Mintmark, thistle. 

Crowned figure of King enthroned, facing, holding orb and sceptre, portcullis at feet. In the field, an intricate pattern of roses and lis insignia. 
Within a Biblical legend in Latin, a long cross over the shield of arms with the mark of value above. Inside the circular legend and surrounding the shield, a band decorated by images of lis, lions and roses. 

Seaby 2632; Friedberg 239.

Courtesy Ira & Larry Goldberg Auctioneers, Beverly Hills, CA. www.goldbergcoins.com
Sale 31: The Pre-Long Beach Auction May 30 - June 1, 2005, Lot 2139