A very carefully made arrow, the 15th century original is a long way from the chunky reenactment arrows you see today!
A shaft of Populus tremula (aspen) 11mm at the head, subtly barrelled at the chest and then tapering down to 7.5mm at the nock (that's less than 5/16"!)
Paper-thin horn insert glued with hide glue
Long, low swan fletchings bound with silk into a dark red compound of wax, tallow and metal oxides
Armed with a tiny, forge-welded military Type 16 arrowhead with evil barbs tucked in tightly to the socket.