[nmridul]

>> sure these finds must have dated in some way to verify the authenticity ....

What happens if the uncle used very old wood or cloth to make the toys. Will the dating technique be able to find the actual age ?

[curiouscavalier]

Dating is done with more than just material analysis. Evidence of tools used to make the toy, techniques for things like joins and stitching, etc. can all be indicative of methods that can give at least a lower bound. How applicable method differentiation is to this specific case obviously depends on a number of things.