hi flavio, nice one. they (the real ones) come in all sizes from about 6" blades on up to about 30", 15-18 inches is the most useful range. bigger ones get a bit tiring to use, and are mostly for sacrificing goats or bullocks in religious ceremony. the south africans were/are fond of the smaller ones for cutting off chunks of their biltong (spiced, salted and dried game meat, like beef jerky) and general kitchen hacking duty. not terribly good for slicing tomatoes. but fun if you do.
the old tale about the gurkha having to draw blood every time he unsheaths his kukhri is nonsense, as they'd bleed to death from a thousand cuts, they use kukhris for general cutlery purposes, cooking, firewood gathering, clearing trails, digging, forestry, general farm work, anything needing a knife/axe/machete/adze/sword/shovel. the blood story was made up to keep having to show their knives to inquisitive and pesty westerners all the time. they also are their last-ditch weapon of choice when the fit hits the shan. (sometimes not even their last ditch choice
)
they of course are still being made today in a variety of patterns and prices, watch out for the cheap stamped out indian ones, especially if they have a lions head brass pommel
himalayan imports in the us (run by a very nice & ethical nepali lady), kukhri house in nepal (high shipping costs) and tora kukhri supplies in the UK (simon knows a LOT about kukhris and their history and teaches martial arts) are reputable dealers with modern and historical replicas, made to exacting standards and definite users as well as display pieces. atlanta cutlery in the us bought a whole nepali armoury with hundreds of them in various states and ages, mostly old, they still have a few.
the armoury marked ones like yours (and mine) were mostly intended as weapons.