I think this was from a newspaper in about 1815
One of those scenes which occasionally disgrace even Smithfield, took place there about 5 o’clock on Friday evening, namely – a man exposing his wife for sale. Hitherto we have only seen those moving in the lowest classes of society thus degrading themselves, but the present exhibition was attended with some novel circumstances. The parties, buyer and seller, were persons of property; the lady (the object of the sale) young, beautiful and elegantly dressed, was brought to the market in a coach, and exposed to the view of her purchaser, with a silk halter round her shoulders, which were covered with a rich white lace veil. The price demanded for her, in the first instance, was 80g, but that finally agreed was 50g, and a valuable horse upon which the purchaser was mounted. The sale and delivery being complete, the lady with her new lord and master, mounted a handsome curricle which was in waiting for them and drove off, seeming nothing loath to go. The purchaser of the present case is a celebrated horse-dealer in town, and the seller, a grazer of cattle, residing about 6 miles from London.