Marburger Spare Leather Watch Strap, 20 mm, Durable Leather Watch Strap with Double Bead Padding, Genuine Cowhide Leather, Dark Blue/Silver, Blue Stitching

Bought this to go with a Seamaster 300, and it looks great. However, the strap is showing wear after only a few days use, and the edge finish has already delaminated (see photo) where it contacts the buckle. Time will tell whether it stays like this or deteriorates further.