They would have to be. I never played w/ dolls as a child and dolls that were gifts were kept in their original boxes, untouched. I was shocked to find the thousands they got at auction...and these were just run-o-the-mill US manufactured dolls. Especially with their *provenance*, her dolls would be worth a lot to collectors. ...[who are probably salivating as we type.]
When I had the farm, I sold mohair to a lot of doll artists. I use to set up a table at all the shows. Got a little education about antique dolls that way and some go for thousands of dollars, depending on the maker and condition. Mint is worth a mint....:O)