Unused, made-in-Mexico tortoise shell pattern pickguard, specifically for Martin OOO-28 guitars. - Color: Tortoise shell pattern - Model: Martin Guitars FM-00 - Manufacturing Location: Made in Mexico - Production Year: 1998 I tried it on my OOO-28. The curve of the soundhole varies slightly depending on the model year, so please refer to the images. If you are concerned, you could have a professional make minor adjustments when installing it. I don't mind, so I use it as is. Thank you for looking. I've added images showing the dimensions. Each mark is 5mm.