Late Gothic Crossbows and Accouterments

[Swordfish]

This Nuremberg workshop arrow mark is also found on the barrels of matchlock Landsknecht arquebuses preserved in the Bayerisches Armeemuseum Ingolstadt, together with the same date 1537; this group of arquebuses was restocked in 1619 (two images attached).

My question:
From where is the information that thes arquebuses were restocked in 1619?

Best