If they came out of a cornerstone, it is possible that they have suffered environmental damage over the years. Pictures or scans would be the only way to give an estimate of condition and value.
The dime could have a mint mark. It would be located on the reverse under the wreath and will be either an S or CC. no mint mark means it was minted in Philadelphia, S is for San Francisco, and CC is for Carson City(Nevada). The CC is worth a bit more than the other two while the Philly and S would be worth about the same.
The dime could have a mint mark. It would be located on the reverse under the wreath and will be either an S or CC. no mint mark means it was minted in Philadelphia, S is for San Francisco, and CC is for Carson City(Nevada). The CC is worth a bit more than the other two while the Philly and S would be worth about the same.




















