Hi,
None of these mutations are currently listed in the 2009 Phylotree (the most complete mtDNA tree available). So they must indeed be rare mutations. The fact that they are in the coding region and not HVR makes it all the more interesting. Are you considered H* at present ? If so, your mtDNA might very well become a new subclade if they find someone else (unrelated to you) at least one mutation in common.