So there were only 10 of these 3 coin sets made?
The gold plated coins are limited to a run of 10, hence only 10 of these 3 coin sets can exist.
Are there other sets like these as well?
None I know of (besides the 10).
They look very nice and the case just "makes" it even that much nicer looking.
The case really gives it a new level in terms of presentation.