in the top pic there is a slight ding above the "M" in the gold and the bottom pic there is a tiny ding a in the maroon above where the last "A" is in yamaha i have to dig the key out of the boxes of parts lol the original owner was gonna restore completely back in 88 or 89 and completely disassembled it. so hopefully it is there i seem to have everything else so i'll check for you tomorrow, i know everyone here seems to think its a requirement to line all tanks but unless you have leaks and or other issues your trying to cover up inside it would be a waste of money and time and usually uneeded in my opinion, the clear needs a good buff out but i'll tell you this is a really good looking tank overall, In My Opinion considering it is 36 years old, i havnt seen the inside yet but i'll bet its good to go. Again i'll look tomorrow for the key and if i have the key i probably want to keep the cap since it matches the ignition keying.
lets go to PM's so it doesnt keep bumping to the top