I kept my eye out for listings in the early years. The only coins I found difficult to get my hands on were the s2 2011 1 BTC brass coin and the 1000 BTC gold coin.
I didn’t set out to collect them all at first. I liked the idea of them so I purchased one of the originals with the error. Then I liked the silver ones so I bought them. At that point it just seemed like I might as well complete the collection so I slowly grabbed the rest. If I had more time before BTC got ridiculously expensive I probably would have purchased the 5 & 25 BTC rounds as well.
I had long wanted to make my own silver coin and when I discovered BTC one of the first things I did was reach out to Gavin Andresen for advice on a coin I wanted to make. He didn’t seem to like the idea because it wasn’t tied to any actual Bitcoin (several years later I made them anyway, my Bitcoin binary rounds). Casascius coins seemed to solve that problem of not being tied to Bitcoin but ran into a different issue with selling loaded coins that needed to be solved. Nevertheless, I wanted to own what I considered to be a great innovation on the idea of a coin and so I did.
Interesting read, thank you about that. It's funny to think/know that some people desires (in your case the initial liking of the whole idea) end up turning into valuable collections/items. I do reckon that even if you don't find any buyer for them you'll still manage to have a physical display of something that already has it's place in history + in the future you may be sitting in something that will be even more desirable. In that regard I wish you the best of luck in selling these.I didn’t set out to collect them all at first. I liked the idea of them so I purchased one of the originals with the error. Then I liked the silver ones so I bought them. At that point it just seemed like I might as well complete the collection so I slowly grabbed the rest. If I had more time before BTC got ridiculously expensive I probably would have purchased the 5 & 25 BTC rounds as well.
I had long wanted to make my own silver coin and when I discovered BTC one of the first things I did was reach out to Gavin Andresen for advice on a coin I wanted to make. He didn’t seem to like the idea because it wasn’t tied to any actual Bitcoin (several years later I made them anyway, my Bitcoin binary rounds). Casascius coins seemed to solve that problem of not being tied to Bitcoin but ran into a different issue with selling loaded coins that needed to be solved. Nevertheless, I wanted to own what I considered to be a great innovation on the idea of a coin and so I did.
Also, thank you for sharing your story regarding how this collection came to be.
Anybody have any idea what those are going for these days or want to make an offer? The brass coins are also likely "soon" to the auction block so if you'd like to make a purchase out of the public eye, PM me. 
