You are missing the point. The datewheels are not perfect. Far from it. I have handled 4 genuine 1680's and have hundreds of detailed photographs of many more. The datewheels I received have jagged edges to all the dates. So much so it made my MBW 1680 look like a cheap New York rep. The datewheel I had previously was from Luenfat from Ebay and apart from no flat 3's looks a million times better, so I will be leaving that on. Now, either I received 2 faulty ones, or they are all like that and consequently not suitable for a 1680. You may get away with it on a 1665 but, personally, I would rather have the one that's on mine already, so I won't be installing one. I don't really care for the material, although a metal disc would be more durable, all I wanted was a product fit for purpose which these clearly are not. Sorry you don't like criticism but even Tribal says they are not too good for a 1680 but Ok for his 1665. I have higher standards and expectations. Lets see what other members think when they start installing theirs.