Latvia 1786 Riga to Ghent Belgium via Amsterdam Stampless Folded Letter SFL

Stampless folded letter, with contents, manuscript "4" and "9" charge markings, struck with ornate framed arrow RIGA departure marking in black (Dobin 0.04, Rarity "8"), to Ghent, manuscript "via Amsterdam" with further "pr Wessel" route endorsement, unobtrusive filing folds, a pleasing example of this scace marking on an attractive early letter.