This is a NOS L677 Lucas flasher lenses 54579153.  Applications include a MGB, 1968-1969 Triumph Spitfire and 1969 Triumph GT6.  The box has seen better decades, but the lens is in great shape and ready to go.  You cannot beat the original old parts.  Get this for now or down the road.  Overseas shipping no problem.

Shipping is gladly combined on multiple purchases to keep shipping costs as low as possible