Five American Art Pottery Rookwood and Van Briggle Items. Rookwood pieces comprising a turquoise vase, cyan three-footed bowl with a matching frog, and a blue shallow bowl. Van Briggle piece is a small turquoise bowl. Rookwood turquoise vase marked, 'RP mark, XVIII, 2109, V'. Rookwood cyan bowl marked, 'RP, XXII, 1307'. Matching frog marked, 'RP, XXI, 1523 ID'. Rookwood shallow bowl marked, 'RP, XVI, 2261E, P'. Van Briggle bowl marked, 'Van Briggle mark, IV, FWW, Van Briggle, Colo spgs, Original'. {Approximate dimensions: Rookwood vase 5 1/8 inches high, Rookwood footed bowl 2 1/2 high x 6 5/8 inches diameter, Rookwood frog 1 1/2 high x 2 7/8 inches diameter, Rookwood shallow bowl 5 3/8 inches diameter, Van Briggle bowl 2 3/4 inches high.}. Condition: Minimal wear overall. Footed bowl with rust spots to the interior.