Sold a Puch frame last week that was marked Made by Araya Hi Ten. Lug work was interesting and for Hi Ten it was a light frame. The bike was a basket case when I received it with a Schwinn RD. Rims were ok and I used them on a different project.
I was guessing it dated mid/early 80's from the cranks that were on it but after seeing umpire54 pictures I wonder if the cranks were off something else. The rest of the parts other then the RD were the same.
Atl Craigslist has recently had a couple "Critieum" and "Vista" posted that look to be the same lug work. They were posted forever and dropped down to around $70 last ad I saw. It looked pretty close to Umpire 54's but silver or gray.