Yinkin 10 Pieces Blank Challenge Coin Threaded Edged 40 mm with Acrylic Protection Box Laser Engravable Pattern for DIY Crafts Birthday Travel Commemorative Collection(Gold)

These are a textured finish but you can sand and polish them mirror like if you want to take the time. They laser engraved nicely.

These coins are high-quality and come with a sleek, threaded edge that gives them a professional look. They’re perfect for custom engraving or creating unique designs. Plus, each coin comes with its own acrylic protection box, which is a nice touch to keep them safe and pristine.Great for collectors, DIY projects, or as thoughtful gifts. These coins are versatile and well worth it! ⭐⭐⭐⭐⭐

These suck. They are cheap metal with a thin coating of good metal. THEY WILL NOT ENGRAVE NICELY WITH A FIBER LASER.

These are okay - depends on the look you are going for with the finished product. There is another option on Amazon that has a gutter around the edge with a smooth satin finish that comes out better on my fiber laser (aesthetically speaking, which is subjective). The only objective criticism I have is they are a few thou thinner than the "other" option on here and for a challenge coin I prefer thicker ("other" is item B0C6QSHP9H)

I use these coins to engrave different things and the quality is very high. The addition of the protective cases that come with them make them look all that much better. Great buy. I have purchased more than 100 coins so far and will continue to buy more.

What can I say. These are ideal. I use them in a laser engraver. They come with plastic protective cases. There is no stray mark or nick so they look perfect from the start.

I've bought these a few times in the last year and they've always engraved perfectly on a 50w fiber. I bought two new sets 10/30/24 and used the first one in the middle of an engraving job (3 of my old stock from the prior order plus one from the current order, same supplier / vendor on all of them). The coins from the newest order threw debris all over with the exact same settings and burned badly, the laser ablated material almost twice as deep on the same settings as the coin immediately before it. I'm pretty sure they changed the mix of brass in these because they're definitely not engraving cleanly with proven settings that I've been using for years on brass blanks.

Was just as described and had good weight to them.