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• If you're using a guillotine cutter, slowly bring the blade down to cut the paper. When you are done, recycle your scraps and use the blade latch to secure the blade. 
• If you're using a rotary trimmer, slide the blade carriage up and down to complete your cut. You don't need to latch the blade when you're done. 
• Whether you're using a guillotine cutter or a rotary trimmer, remember to be careful and don't rush through your project. These cutting tools can be very dangerous if they're used incorrectly. 
• If you want to actually see how to use a paper cutter, be sure to check out the embedded video. 

You just found a Speedmaster Professional listed for $3,200. The photos look clean. The seller has five-star feedback. Your thumb hovers over "Buy It Now." That feeling in your gut? That's the only thing standing between you and a $3,200 paperweight. The counterfeit watch market has never been more sophisticated, and Omega is one of the most frequently counterfeited brands in the world. A 2026 Bezel report found that the platform rejected 34% of watches attempted to be sold in 2025, with Omega taking second place among rejected brands at a 10% share. That's one in three watches failing authentication. One in three. Why It Matters Here's the thing about today's counterfeit Omegas: they're not the cheap junk you'd spot from across a room. A Gray & Sons 2025 internal report found that many replicas now feature convincing external details including accurate engravings, proper weight distribution, serial number imitations, and even cloned movement appearances. The old rules—"just weigh it" or "check if the second hand sweeps"—don't cut it anymore. The numbers are sobering. Bezel's authentication team rejected 38% of listings in the second half of 2025, up from 27% in the first half. That rejection rate climbed even as the average value of rejected watches reached $10,679. People are losing serious money on these things. And the problem isn't confined to dedicated watch platforms. Counterfeit watches are increasingly appearing in private-party sales and online marketplace transactions, where buyers lack access to professional verification. Facebook Marketplace, in particular, has become one of the largest channels for buying and selling luxury watches locally—but its lack of authentication, minimal seller verification, and limited buyer protection make it one of the riskiest places to buy. But here's where I'll disagree with the standard advice you'll find on forums. Everyone says "just buy the seller." That's become meaningless. Scammers have figured out how to build credible-looking profiles, manufacture feedback, and sound knowledgeable in messages. The seller's reputation matters, sure, but it's not a shield. You're buying the watch, not the story. That 34% rejection rate isn't just a number—it represents real buyers who nearly got burned. A rejected watch on Bezel means someone tried to sell a fake, a Frankenwatch, or a watch with swapped components. And many of those would have passed a casual visual inspection. One of the unresolved questions in the industry right now is whether authentication platforms are actually reducing the total number of fakes in circulation or just concentrating them on platforms that don't have rigorous checks. My view? The latter. The platforms with authentication are catching them; the ones without are becoming dumping grounds. That's not a solution—that's displacement. The Model-Specific Tells That Matter Omega makes several distinct families, and each has its own vulnerabilities. A fake Speedmaster looks different from a fake Seamaster. Here's what to check for each major model: The table above gives you the cheat sheet. But here's the problem with cheat sheets: counterfeiters read them too. By the time a tell becomes widely known, the better fakers have already started addressing it. The "dot over 90" on Speedmasters is a perfect example—it's now so well-known that some high-end fakes attempt to reproduce it, though they still usually get the placement or printing quality wrong. The Movement Test You Can Actually Do Here's one piece of advice that's genuinely underrated. Omega's official website states that Omega calibers cannot be replicated—components such as the Co-Axial escapement wheel are exclusive to the brand. If the watch is a certified Master Chronometer, it won't be affected by magnetic fields. By placing a magnet close to the timepiece, you can easily detect if it's authentic or not. Try this on a genuine Omega with a co-axial movement: the second hand keeps running smoothly near a magnet. Try it on a fake with a standard quartz or conventional mechanical movement, and you'll see it stop or stutter. It's not foolproof—some fakes use anti-magnetic components now—but it's a quick test that costs nothing and takes five seconds. Friction Points The single biggest mistake buyers make is trusting photos. Counterfeiters have gotten exceptionally good at photographing fakes to hide the flaws. Soft lighting obscures poor finishing. Angles hide misaligned subdials. Low resolution hides fuzzy printing. If the listing photos look too polished or don't show the watch from multiple angles with clear macro shots, that's a red flag. Another mistake: relying solely on the serial number. Every genuine Omega has a unique 7- or 8-digit serial number. But counterfeiters have learned to copy serial numbers from real watches or invent plausible-looking ones. A serial number that checks out in a database isn't proof of authenticity—it's proof that someone copied a valid number. The real check is whether the serial number on the watch matches the one on the papers, and whether the reference number corresponds to a known Omega production reference. The third mistake: assuming that because a platform offers "authenticity guaranteed," you're protected. eBay's Authenticity Guarantee has helped with watches, but the site is still saturated with fake parts, bracelets, and straps being sold at genuine-article prices. The guarantee applies to complete watches, not components. And even then, the guarantee only kicks in after you've paid. Fake parts sold separately. Bracelets, straps, and bezels are particularly vulnerable. A genuine-looking Omega bracelet on eBay might be a high-quality fake, and you'd never know until it fails. Frankenwatches. A watch with a genuine movement but fake case, dial, or hands. These are harder to spot because part of it is real. "No papers, no box." Sometimes legitimate. Often a way to avoid scrutiny. If a seller can't produce the original papers for a $5,000+ watch, walk away. Prices that are too good. The Bezel data shows rejected watches averaged over $10,000. If a Speedmaster Professional is listed at $3,200, you already know the answer. The Bottom Line Buying an Omega on a marketplace isn't impossible. It's just risky in ways that most buyers underestimate. The 2025 data from Bezel—34% rejection rate, 10% of those being Omegas—should tell you everything you need to know about the scale of the problem. The replicas are good. Really good. Good enough that experienced collectors get fooled. Here's what actually works: pay for professional authentication. Not just the platform's free check—pay an independent watchmaker who knows Omega. Gray & Sons' 2025 report emphasizes that authentication has become a critical step not only for resale value but also for protecting buyers from significant financial loss. The $100 or $200 you spend on a pre-purchase inspection is cheap insurance against a $5,000 mistake. And if the seller won't agree to a third-party inspection? That's your answer.