Gentleman's Regency Tail-coat, Mr Darcy never looked finer, give your Austen and Dickens characters theatrical presence... by OldCuriosityCostumes on Etsy https://www.etsy.com/listing/182275479/gentlemans-regency-tail-coat-mr-darcy
Men's dress coat, 1801-1828. Swallow tail coat, made of navy wool, facecloth with plush dark blue velvet collar. This coat is double brested, and with tails. The coat is combined in this image with breeches of beige colour. Museum of London.
This dress coat of a captain or commander shows the impact of contemporary fashions on uniform. The front is cut straight across in the cutaway style. The lapels are still working, but by this period it was the fashion to stitch them down so they could no longer be unbuttoned. The buttons feature the crown over the fouled anchor which was introduced with the 1812 regulations. Finally, the pocket flaps are non-functional and completely decorative as the pockets are now located in the tails.
Nelson’s Trafalgar coat.Royal Naval uniform: pattern 1795-1812 (Nelson’s Trafalgar coat). Made before 1805. England. Materials brass; gold alloy; metal thread; silk & wool. Vice-admiral’s undress coat worn by Nelson (1758-1805) at the Battle of Trafalgar. There is a bullet hole on the left shoulder, close to the epaulette. The damage to the epaulette itself is also apparent. There are blood stains on tails and left sleeve-more info here