Quote: told me he'd send it later when he found it but never did (even after offering a finders fee for it..)
I can't tell you how many times I've heard that story and I'd guess that 90+% of the time, the tag never shows up. I've said to people; "well, when the tag shows up, call me....until then I'm not interested". You have a fighting shot of the tag showing up before the money changes hands...after that, not so much!
...luckily for you, you at least have the BS and a tag pic. I've made sure my tag doesn't "grow legs" and I've got pics and rubbings in a few locations just in case.