This item, purchased from another flea market site, is a 1680. It's a custom piece assembled with various parts. The following is a quote from the previous seller: "It's a model with a domed crystal and no cyclops lens. The main body and spare links shown in the photos are included. It has some signs of use, but I personally think it looks cool with a vintage feel. The bezel doesn't click, but it can be rotated. The movement works without any problems. The dial is, according to the previous owner, a SINGER dial. The other parts are aftermarket (the case itself has a 1680 engraving). This is a redial product, and I am unable to remove the dial, so I will send the case and other parts as they are. If you don't need them, please remove and dispose of them yourself. I don't have the tools to remove the case back, so I don't know what movement is used. Please purchase only if you understand redial products. Rolex Submariner"