Armour
This is a broad group of objects in which fuller sets appear alongside individual helmets, shields and costume elements. Visible items include samurai kabuto with mempo, the Takeda Shingen suit of armour and pieces inspired by the film 300 Spartan. That spread alone shows the category is not tied to one style. In one case the key factor will be a specific visual theme, in another the size, weight or whether the item is meant for display or for costume use.
The data shows major differences in scale. Some pieces are around 28 or 47 cm high, while weight can begin near 1.9 kg and rise to much heavier constructions. That matters especially with helmets, shields and larger assemblies because the way an item is supported or mounted should match its real weight rather than the impression given by a photograph.
Display space and care
Before choosing, it is worth checking whether there is a stable place at home or in a studio for proper display. A helmet needs a different support from a shield, and a fuller armour set needs something else again. The material description and finish are also worth reading because they influence later cleaning and care.
For storage and display, it is best to avoid letting metal surfaces rub against hard edges. Remove dust with a soft cloth, and inspect multi-part items for looseness at their joints. That is usually enough to preserve appearance without taking unnecessary risks with the finish.