VW Oval Bug OELLUX Oil change reminder

One (1x) VW Oval Beetle OELLUX Oil change reminder miles counter gauge in good condition. The Oellux is made of metal. It is a mechanic oil change reminder made in Germany in the 50ies. 

After the oil is changed, you open the rear and then you just roll the wheels on the counter to match with the speedometer mileage. The size is 3 x 3 cm and the length 5 cm.

You can mount it with a strap as shown in the 1957 auto parts catalog or you may mount it with the indictor switch strap.

The picture of the VW Oval dashboard with the Oellux, is a scan from Gute Fahrt magazine year 1957. The last picture shows a nice Oval Beetle fully loaded with rare accessories. The owner Peter from Denmark told me that he mounted Oel-Lux with a little modification as you can see here: https://www.thesamba.com/vw/forum/album_page.php?pic_id=1355042

Please choose one. There are four available, with odometer readings set to 10,000, 20,000, 60,000, and 70,000 kilometers. All are original, in good condition, unrestored, and in perfect working order.