I inherited a Halina 6-4 some 27 years ago, and have used it....it's a fair performer like most Halinas....it could have been more but they filled a market for cameras that looked sophisticated but were a couple of rungs lower than the big brands. The fun thing with the 6-4 is the ability to choose 6x6 or 4x4 on 120 film.
I'm actually rather fond of the Halina 35X.....there are still plenty about at £10 or under, it looks a bit like a Leica and it has enough settings to take photos in most conditions....the triplet lens is emphatically not the sharpest but it's OK, and at f8 or f16 is surprisingly sharp. I have three, two inherited 15 years ago and one a gift 10 years ago.
Halina was a Hong Kong brand, indeed 50s and 60s examples are sometimes stamped "Empire Made" on the base. The brand name may still exist, but the manufacturing facility in HK is long gone.