E121-120 Ruth card values for insurance purposes
 

Simple question and the answers are probably already posted but what are the approximate values of E121-120 Bab Ruth cards. I have all 3 SGC graded and they are as follows:

Ruth holding Ball SGC 10
Ruth holding bird SGC A ( trimmed but presents well)
Ruth montage SGC 10

All cards present well but the grades are deserved. Trying to establish an insurance value.

Thanks,

Ken