I collect these also, and are just a few short of having the whole set. I am not collecting the Empire set B, unless I find them super cheap. I started my collection through Hamilton, and it was a bit pricey. Much cheaper on eBay now. Will be great to finally finish the set.
I also have a porcelain card collection from Hamilton, but still missing 4 from that collection, too. At least there is still something to hunt for!