Welcome to the forum.
A larger close up photo of the marking would be helpful. Unfortunately by using a hosting site, I was unable to enlarge the photo.
Try using the MANAGE ATTACHMENTS button below any reply box and upload a photo directly from your computer. Or if that is not doable, try taking a closeup.
GUNMARKS (a great reference for logos) identifies that trademark as Garate, Anitua y Cia of Eibar.
Bob