Probably the safest is to replace the whole clasp anyway.
If you can handle the work yourself (not different from removing/adding links) you can have a local major AD or a boutique to order the clasp for you, Archer just provided the part number above. I reckon it will be in the 200 euros range.
It's £219 in the site below, which is know for being generally overpriced:
https://www.swisswatchspares.com/pr...t-ocean-1580-952-steel-clasp-bracelet-2201-50Click to expand...