First look at the place of origin. Medium size 6 16 made in Shanghai and small size 6 16 made in Lishui. As long as the place of origin is wrong, for example, the large size of Lishui products or the small size made in Shanghai are fakes.
Second, look at the price. Basically everything you can buy now is fake.
Third, look at the nib. If you can pull it out yourself, it's fake. It is true that the nib of 6 16 has a small hook, and the structure is hooked in it, so it can't be pulled out.
Fourth, look at the lettering on the nib. It's really engraved with a heroic logo, but it's nothing fake.
Judging from the appearance, the real 6 16 anti-counterfeiting is behind the package, and there is no round anti-counterfeiting laser sticker in front. The threads between the pen holders are four threads. After the pen tip was taken out, I saw a small circle and two Chinese characters, Hero.
Extended data:
? 196 1 June, hero factory designed a cylindrical iridium nib. The pen tip water outlet system is designed reasonably, uninterrupted, watertight, and writing is smooth and comfortable. It is named 6 16# iridium pen tip.
Based on the structure of the original hero 57 1# gold pen with 6 16# iridium tip, the factory was named Hua Fu 6 16# large-size advanced iridium pen, and later based on the structure of the original hero 58 1 gold pen with 6 16 iridium tip, the factory was named Hua Fu 6655.