Coat of arms 13th century

The coat of arms is a military surcoat worn over the armour. It is also called "tabard",but as soon as a heraldic emblem is present, the term coat of arms seems more appropriate.
In the 13th century, coats of arms were quite long at knee height, with a central slit in the front and back.
They are mostly sleeveless but there are some representations with short sleeves.

Sources:
- Maciejowski Bible (1250)
- Fresco in the church of Coincy (Picardy) around 1200
- Detail of the seal of Savary de Mauléon, 1225

Possible options :
- With or without lining
- Material : wool, silk, linen, futaine, cotton
- Exposed hand seams
- Painted, applied or embroidered heraldic emblem