Definately ave those pictures available for Support. They could also transfer you to PARTS to order parts as well, but they may recommend you to a specific web site for European parts sales.
Fuse holders are usually no problem. Brackets may also be no big deal. There are many types of clamps that are often used. Most don't have brackets, but have mounting holds for clamps or for other mounting options such as bolts.
Folks, a word of advise:
Always test used fixtures before purchase whenever possible. The cost of repairs often will exceed any cost savings for older fixtures.