Occasionally on Moonbase Central we have discussed the black and white chequered pattern found on some Project SWORD toys. A good example is that found on the top of the Probe Force 1.
Having browsed the net for a possible inspiration for these, I came across this comprehensive article called Painting Rockets by Amy Shira Teitel, an eminent space journalist.
If I have understood Amy's article correctly, the black and white pattern is a remnant of early missile tests and rocketry and it aided observation and filming of rocket or missile body rotation in flight.
Other toys similarly mimicked missiles and this very same checkerboard ring too. Dinky's Honest John is a good example.
But most checkerboards in the toy world are found on plastic model kits, particularly those of US missiles. Take a look at this Monogram re-issue of its vintage missile arsenal to see a variety of black and white patterning.
Have you got any toys pr models with the black and white check* on them readers?
* chequered and check/checked appear to interchangeable. Is that correct?