Vintage REX polish finish 60ies NOS

Vintage REX polish finish in new old stock (nos) condition. The REX polish was made in Germany by REX-AUTOPFLEGE GMBH MAINZ. The glass bottle is marked with “REX Politur für Mopeds und Fahrräder” which means this is recommended for bikes. Made in the 60ies and so I do not know if the product still work. REX comes with box and instructions and the size of the box is 11 x 6 x 4 cm.