Genuine Marshall Logo, White Plastic - Large (about 11" wide) - M-LOGO-00005

Genuine Marshall Logo, White Plastic - Large (about 11" Wide) - M-LOGO-00005 - Injection molded from white plastic, this ~11" wide genuine Marshall Logo is installed on 1960A and 1960B 4x12 speaker cabinets, among others. Front and rear views shown above, sold individually. Limit of one per customer.
How will I know that this is the right size logo for my amp?  The two outside mounting pins (located on the back of the “M” and the final “L” letters) are located about 8 9/16” apart.