Hi, my name is*****'m a certified appraiser, and I'd be happy to help.
Just to confirm, there is no artist's name hidden anywhere about? Sometimes these are quite subtly hidden in the bushes or rocks.
I'm sorry, I've been unable to locate any information on this.
I'm going to opt out, and let the other appraisers take a look at your question. You don't have to do anything, and you won't be charged further. You'll get an email notice when another appraiser picks up this question.