This does resemble a"mainz" style gladius which has a wasp waist which were later replaced by straight blades because they were easier to make-but the mainz continued to be carried by Roman soldiers and were cherished heirlooms passed on. This would have been the envy of any Roman soldier-most likely an officer would have loved to have this one. An impressive piece of work.
The actual sword is based on a sword from Atienza, Spain, dating from the fourth century BC. Kind of an early Iberian/Celt precursor to the gladius type of look. The "Sword of Peru" doesn't refer to the country. It's just a reference to the "Attila the Hun" book trilogy that references that whoever found the "Sword of Peru" would rule the world.