The smallest is 50 ml and marked 5360. The next two are 125, and one is marked 5360. The largest is unmarked, either for maker or size. The final photo shows another flask that is NOT included in the lot; it's simply there for size. So I think this largest unmarked one is 250 ml size.

I have other lots of flasks, but these are the only ones with side arms. I'm happy to combine shipping.