turkmen rug. hard to tell the age on these, but going by the fringe and field color it looks like you're probably right: probably
close to semi antique which is 50 years.
For the value we'd need to know more about condition of the pile & wear. if it has stains, worn areas, etc. Also, what kind of value do you need to know? approximate replacement value for insurance? retail? private party? sorry for all the questions, but they just help to address the info.