I saw the posting at left about two weeks ago on Grant Street near Ohlone Park. As part of my ongoing interest in Berkeley flier culture, it piqued my interest. I especially like the handwriting and the attempt to attach the sign to a tree with packing tape. I also noted that somebody had come by and written "thanks" on the sign, which I thought might have been an acknowledgment from he or she who lost the key. I didn't notice when I snapped the picture that I had not captured the whole phone number.
I saw the sign at right, one of several posted in the same neighborhood, maybe a week later. I thought, "Wow, I saw those signs they're talking about." I took a picture, but didn't download it from my phone right away and forgot about it. Until yesterday, when I looked at the "Lost Toyota Key" picture and went back and located the "Found Toyota Key" picture. Too bad I captured only six of 10 phone digits. I decided to call the guy who was looking for the key anyway to see if he had found it.
He had not. In fact, he was waiting for the locksmith to come and make him a new key. I told him about the (not totally amazing) coincidence of having pictures of both signs. He was excited until I told him that all I had of the phone number was "510 277." That meant he had 10,000 possible numbers to call to find his key. I went back out to the place where I took the "found key" picture. The tape is still on the tree, but there's no sign of the sign.
Lesson: Get the whole phone number next time.