Early Paintbox

"The collapsible tin paint tube was invented in 1841, and by 1860 or so they were in general use. Early watercolor paint sets with powered cakes are seen on occasion, but sets like the one above with corked and bottled colors to be mixed by the artist are scarce indeed. In around 1827 (?) the British company Ackermann sold a paint box, but an auction catalog indicates "early marked pigment