Here it is. On [id=160428664;this extra-thick Hemingray No. 9 CD 106], there appears to be an embossed '2' placed between the 'A' and 'Y' of "MAY". Maybe even an upside down backwards '5', though I don't know what that would be doing there. There doesn't appear to be a listing for this. Any thoughts from you experts out there? I was recently given the astonishingly accurate theory that perhaps the engraved embossing is "No. 9". Thank you, stranger. The simple and short response to this is that the error is indeed "No. 9".