If you want to keep them for personal reasons, their condition and quality doesn't matter.
If you actually want to use them, there are a few "warning flags". First, apparently they were not in any sort of packaging. Somebody who knew the value of good quality tools wouldn't keep them loose in a box or whatever.
Judging from the sizes and shank lengths, they are part of a set but with several bits missing. Murphy's law says that the first time you want to drill a hole, it will be one of the missing sizes.
The USSR used the metric system in the 1980s but there is no easy way to tell exactly what size the bits are, and whether they will be the correct match for modern screws, bolts, etc. Measuring drill bit sizes (or the size of hole they drill) is not trivial even if you have a set of calipers - another reason why the lack of packaging is a warning flag. Bear in mind that modern drill bits are easy to buy in size increments of 0.1mm, and there is a reason why there are so many different sizes avaiable.
Finally, even if they were originally high quality, you can ruin any drill bit in 30 seconds if you use it incorrectly, and you have no idea how these have been used in the past.
Personally, if I was considering using these bits I would first try them on some scrap aluminum or brass. If they didn't cut it like butter I would throw them away. Blunt drills are more trouble than they are worth, and if you had the tools and knowledge to sharpen and re-harden them, you probably wouldn't be asking the question!
Note, I'm not "against old tools" as a matter of principle. I regularly use some hand tools that are more than 100 years old, but I know their history, I know why modern replacements of the same quality would be very expensive, and I know how to look after them so they will last another 100 years or more.