MINT CONDITION 1968-69 15x6,8x3,5 cm. Interlocking. 26 elements. One of the elements is a ring. 6 exemplars in gold (I/VI to VI/VI) lost wax casting, 500 in sterling silver or bronze 1 to 500 lost wax casting, 9.500 exemplars in nickel plated (501 to 10.000) casted with steel injection molds. Original book of instruction, available is essential and is also certificate of authenticity. For more info please contact us. info@art45.com