Dunfey Exhibition › The Sentinel by Mary Webber Image 1 of 1 The Sentinel by Mary Webber $1,200.00 Collage, 30.25 × 26.5 in. For shipping inquiries, please contact the gallery at 603-431-4230. Purchase Added! Collage, 30.25 × 26.5 in. For shipping inquiries, please contact the gallery at 603-431-4230.