there is obvious history of other items marked “NHMSS” but what is elusive is solid details as to who or what is the source.
numerous different artist initials are also found on these pieces which are simple block letter stamps which are sometimes difficult to attribute.
it is possible this was some type of jobber shop or wholesaler but again there is no definitive information to reference.
I have suggested in the past to send photos to several auction houses for evaluation to see if there is interest in adding your squash to an upcoming auction catalog.
the link below will take you there
https://forum.turquoisepeople.com/t/squash-blossom-value/13065/3?u=steve
