BIG FIND! I found an Air Raid Siren (not sure of its make) in Scalloway! https://www.google.com/maps/@60.138488,-1.2763226,3a,24.6y,64.49h,109.18t/data=!3m6!1e1!3m4!1sgpNuvmQ4VW9XX3BM_NGLkw!2e0!7i13312!8i6656?entry=ttu Ooo nice, seems to be a Castle Castings with an SO4 or SO3 next to it aswell! 😲