Hi Sidney,
If you're really interested in making an exact copy, what I'd really suggest doing is going to Stockholm with a caliper micrometer and making plan measurements off the blade. Photos and notes will only go so far, and what you're missing is a three-dimensional description of the piece. The museum may be interested if you're willing to give them a copy of your data, and/or photos of your replica sword. They might find that useful in their educational work.
Albion Swords uses this approach, and you might want to contact them for advice on how to "take the lines" off a museum sword.
Best,
F