Here is my take on the sign. It may or may not be correct.
It is a real and original sign of Samuel P. Richard and has historic value.
However, Samuel Patrick Richards is not the Samuel Richards of Atsion. Samuel Richards of Atsion never use a middle initial, if he even had one. Samuel of Atsion did have a son named Samuel Patrick Richards born Feb 19, 1802 however, he died in Sept of 1803, less than two years old.
The Richards genealogy has 6 Samuel Richards in it. They are:
1. Samuel Richards son of Willian of Batsto - no middle name shown
2. Samuel P. Richards son of Samuel of Atsion - lived less than two years
3. Samuel P. Richards son of Jessie Richards - middle name Patrick
4. Samuel Richards grandson of Samuel of Atsiom - no middle name shown
5. Samuel Richards son of Thomas, brother of Samuel of Atsion - no middle name shown
6. Samuel Bartram Richards - middle name Bartram
Of the 6 only one is recorded as Samuel P Richards. So, the only Samuel P. Richards in the Richards genealogy is Jessie's son Samuel P. Richards. Like Janet said, it looks like he was the owner of the sign.
The next question is what was the sign used for and where did it hang? Did they hang signs on mansions? I don't know. To me it looks like a sign that hung on a general store or shop or maybe a business of some kind. I don't think Samuel P. Richards was an Ironmaster. His father Jessie was Ironmaster at Batsto until the last blast blew out January 25, 1848. By then they were well into the glass business. Was the sign on the glass house, probably not, when Jessie died his oldest son Thomas H Richards continued to run the business.
The only thing I have read about Thomas H and Samuel P. Richards is they made many trips to New York and Philadelphia promoting their glass products.
RJ, I hope this helps to narrow you search a little. You have a big job ahead, Good Luck, Don