These are marbled test parts, LEGO Part# FTOakH. Made in Denmark in the 1960's.

Marbled LEGO test parts are often the result of changing colors during the molding process and were not made for commercial use which makes them extremely rare.

Each one has a unique colored, tie dye, marbled pattern. Each sold separately.

To learn more about the parts we offer, call us at our storefront at 470-414-2208 and we'll be happy to help to answer any questions you may have.