I would imagine they are surgical implements and are probably made from a stainless/nickel base, you can judge this for yourself by the weight and feel of the metal,
but if you are willing to go a step further you can always do the old fashioned "grinding test" to differentiate between metals of an unknown grade, this was used for many years and you look at the spark "patterns" to see what it's made of, a simple guide should be available somewhere. This is only if you're willing to mark them or change them like the question seems to imply.
Some of them look like they would make good pick up tools or just general picks for getting grit out of hard to reach places, others could be ground to a chisel point and used as basic turning tools.
If you're into model making they could make fantastic sculpting tools, i usually keep this sort of stuff and i normally find a use for it eventually if not immediately so don't lose hope. "theres a time and place for everything"!
Michael W
Edited By Michael Walters on 17/06/2016 12:29:04