Gijsbertus Johannes van den Berg, Portrait miniature by Abraham van Rijckevorsel (1745-1815), portrait miniature painting visual material wood paint watercolor ivory ivory medium (day size), Standing rectangular wooden frame with visible grain oval male portrait inside lying copper-colored smooth oval ornamental frame. Globe glass slide. On the reverse side of the hanging eye with fittings on the front in the shape of an acorn on the front side Right in the background: GIVD Berg f: 1804 Erasmus Foundation Parklaan Rotterdam City Center New Work Abraham van Rijckevorsel 1745-1815 Merchant Aletta Adriana van Vollenhoven Long-term loan Erasmus Foundation.