Thanks for your replies Carol, Jim and Gadget.
DOB and DOD were included in the Subject, so Joseph would have been 57 in 1900.
I see the rounded corners suggest 1890s and I guess that is as close as we are going to get.
Thank you for that information, Gadget.
It's a pity the photographers name was not included with the banner beneath the photo, and I thought the background might have been relevant. Obviously not a studio portrait.
John B