Didn't see any #s until I was editing the pics! Checked it and looks like F326. Not certain on the 3 or 6. Is stamped with a circle (large H with P on top of h & W beneath)
. SEE Combo Pic #2 in this album for a good image of the stamp described.
"I needed a very high quality print to enter in a photography art show. I had my photograph printed at a superb printer, using a very expensive machine. I also ordered the same print through Photobucket. And yours was superior!"