Franck Muller replicas are usually fairly easy to spot: cheap materials, crappy dials, poor case-back engravings. The replica shown in the photos below is a good example of how these flaws can be overcome with customization. It's also a testament to buying your watches from Authorized Dealers (AD). You avoid most of the risk of being taken by high-end custom-made replicas that use genuine parts, sometimes called "frankenwatches".