Why don't you make a year set, don't worry about mint marks just one from each year. The 1893 will be the most expensive but still it makes a great looking set.
I love the Big penny from Australia, I am working on a set of them now and really enjoy them, I just received about 30 of the 1/2 penny coins from a friend in Australia and now I will be working on filling the empty spots between them.
Very nice coin and sounds like you got a good deal. I do not have very many of the dollar coins yet, still working on my large penny set and yesterday I got 30 of the 1/2 penny coins from a friend in Australia, now I will have to finish that set also.
I have all my foreign coins in individual notebooks, most are 2 or 3 inch D rings, it means a lot of notebooks but I have a lot of shelves to keep them on.
I am still working on the large penny set from Australia.
I would leave them in their cards and make an album of the NCLT coins, (such as 2x2 pages) and keep it with the regular album. That way you would have the best of both.
Recently I got a silver round from a local store that someone had paid for their soda with thinking it was a dollar, the clerk was new and didn't know what it was. She told me that she had taken it and wanted to know if I would want it. I ask her how much she wanted for it and she said $1, that is how much she allowed for it, I gave her a five and told her that anytime she got something unusual in save it for me. It was a USS Constitution silver round.