spark plugs

[Alex Blair (RIP)]

Originally Posted by chris vickery

I came into aquisition of some M series type spark plugs that I do not recognize. My thoughts were that maybe they were aircraft, 151 or something other.
They are a metal bodied waterproof type plug, finsihed in zinc dichromate (yellow anodizing) with the following markings:
LEONARD R14 GSXK
Any ideas?

Chris..
Was in Acton over the weekend and thought of you..Those may be motor cycle spark plugs..Bombardier..maybe..??