1970s Grangemouth Factory Test Bricks Collection (Employee Owned/Produced)

[rzc]

Hi Everyone, 

I'd like to share my collection of 330 2 x 4 LEGO test bricks that were made in the Marbon Chemicals Factory in Grangemouth by my father who worked there.  There is a wide variety of colours and marbling effects on the bricks as you will see from the attached photos.  

https://flic.kr/s/aHBqjCK9RK

Thanks

[1963maniac]

Now, I get it. these were made for a purpose.They show which direction the liquid plastic is going. They show how well or not the mold is working.

[Johnny1360]

Those are some really interesting bricks, you could make some cool psychedelic stuff with those. Thanks 

[Peppermint_M]

Those are really cool, a most excellent collection. Thanks for sharing.