I don't see the photos either. I think they didn't upload correctly. This site has a lot of tech issues that should have been resolved long ago. It makes new users not want to stay around very long.
I like that Bitterquelle bottle with the druggist label, and it's a poison label too! I've got a couple like that too, I think it was a fairly common practice, though I think this is the first I've seen that was done for poison. They were usually more careful about that. All the other "repurposed" bottles with poison labels I've seen have been NOS labels recently stuck on the bottles, but yours looks legit.
The ink bottle probably isn't repurposed, these were sold wholesale to all sorts of different companies and had the potter's name debossed into them. I don't think repurposing often happened for that kind of commercial product, I've only ever seen it done by local druggists and soda bottlers.