I have an Oris and it does not have a screw down crown. the crown and stem sticks out very far. I can twist down the crown and find a spot where it stays down, but if it is touched or twisted ever so much, it pops back out. I don,t think the stem should be openly visible. Can you advise me what to do. I purchesed it from ebay and am wondering if I should send it back. Thank You, William

Watches - ORIS - Watch Big Crown Pointer Date 75475434061MB