Sorry for the large image size, found this at auction (unfortunately wo a lot of background) and it ended up as a nice Christmas gift for my mother. Have tried desperately to dig up info on the mark or the technique but so far have come up mostly empty. Suspect its 40 – 75 yrs old based on the shadowbox it was in and the mark seems to indicate an individual artist vs a company.  Don’t mind doing more digging but any direction or info that anyone can provide would be most greatly appreciated.