Hello and welcome! My name is Doris.
I have been an antiques collector, dealer and appraiser for over 56 years.
I will be pleased to help you.
See the following image. It shows one of the various styled signatures of ***** *****. Note the signature is certified. It is retail priced at $2185.
We can then assume that your example, if officially certified, would have a similar retail value.
Collectors will not pay this price for an uncertified signature.
A service that certifies signatures can be found here.
You may know it to be real but authentication must be done in person; ie, with signature in hand.
It is impossible to authenticate from a photo.
This business will authenticate signatures for a fee.
In general, a private seller to a dealer, via consignment or at auction can expect 30-50% of estimated retail value.
Insurance replacement values are usually about 10% more than retail values.
I hope I have helped you.
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