These are copies of Mary Rose arrow MR80A764/11 which is amongst a new batch of the original arrows I'm researching at the moment, all with rather interesting dimensions.
The only difference between these and the original Mary Rose arrow is that mine have verdigris compound as requested by the customer whereas the Mary Rose original doesn't.
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Birch shafts, tapered horn inserts, verdigris compound and red silk binding. These are fitted with Winchester museum M2 heads with exactly 12mm sockets to match the original shaft.