VINTAGE 60’s Vox AC-30 Top Boost Grey Panel Guitar Amp

What a clean beautiful AC-30 . Grey 6 input panel with the top boost built-in to the control panel , not an add-on on the back panel like most are . You can see in the pics the red “ top boost “ stamped on the chassis . Serial number also stamped into the chassis near the red top boost is AC-30/6 05267 . Maybe someone can relay to me the year of this amp ? Original Silver Bell Alnico Speakers , Chime Chime or Growl , they do both . This amp sounds great , SUPER CLEAN ! Comes with a nice padded cover and the original Vox egg tremolo footswitch