And yes they are still used, the drills and reamers are morse taper so need to be used in a lathe or a drilling machine which has a taper spindle.
The reamers are really precision tools so the ones you have are probably not a lot of use being as they are rusty but the drills could probably be put to use.
The burrs are probably just HSS so likely not a lot of use nowadays.
As has been said the drills may be of use but the reamers are probably not.
Chuck them on eBay and you may get a decent return, lots of people there will likely buy them.
Should get £20 or so on eBay as a lot, might even get a couple of numpties trying to outbid each other.
To me personally the drills would be worth £10 but then again I have plenty already so...
I'll go a tenner for the drills, if they won't be way too much to post? The reamers... If I had a tool and cutter grinder they'd make good practice pieces