old dolls I'm looking for there worth?

Hello,  I've collected and restored antique dolls for about 20 years now and will offer my opinion.  The doll in the blue and the one in red appear to be home made, possibly in a ceramics class.  This was a popular item to make back in the 1960's through 1980's.  You might unclothe them and look to see is there are any initials or a date, usually found on the back of the head or the bottom of a foot,  As to their value I would suspect it was sentimental to your grandma.  The blond haired plastic doll was one that would have been sold in a dime store back in the 1940's through teh 1960's, or from a gift shop as a souvinir of someone's travels.  These were mostly made by the Carlson Novelty Company.  It's value is about $5.00.  I hope this helps with your search.