- Top and bottom pins that are made of different materials (most common are brass and nickel silver)
- Pins using flat external washers
- Pins that look different from one another, even if they are the same material (this is not a guarantee of a replaced pin, just suspicious)
Why does it matter when the razor is removed from the scales? The main reason is that you can no longer be sure that the razor was original to those scales. The scales can be a vital clue to a razors age and identity. Replacing scales with a model never used on that razor cheats history by creating a "fantasy" piece - not a genuine collectible.