2022Venduehuis DickhautJan van Os (1744-1808), sepia drawing, resting herd, sig. b.r., 1826, dim. 63 x 50 cm, slightlySee Sold Price
2023Tiberius AuctionsJan van Os, Middelharnis 1744 - 1808 The Hague, Circle of, Large flower pieceSee Sold Price
2022Carlo Bonte AuctionsAfter Jan Van Os (1744-1808), a sill life with a stone vase and flowers, watercolour and pencil onSee Sold Price