Lou Piniella Seattle Mariners autographed memorabilia. Add this Lou Piniella Autographed Rawlings Major League Baseball with 1969 AL ROY Inscription - Grandstand Cube Included - Certified Authentic to your Seattle Mariners signed memorabilia collection. This product has been authenticated by Prime One Sports and comes with a Certificate of Authenticity and matching taper-evident hologram. All Prime One Sports memorabilia is backed by our 100% Money Back Guarantee. Get your authentic Lou Piniella Autographed Baseballs from Prime One Sports Online. This bold Lou Piniella signature is authentic and can be an excellent addition to your man cave, home or office.