The police officer will be pleased. He can use your photo to reinterate the stop sign existed.
Unless totally obscured beyond recognition - I bet you will be up for a fine + time, energy and expenses fighting it.
pinkboy
Was there a full block line on the road where the stop sign was?
If there was, plus the stop sign - I'd say you'll be up for the fine. I think a sign at 45 degree is pretty weak argument.
pinkboy