There were 3 Hamilton Railroad Specials: the 50, 51 and 52:
- 50: All stainless steel
- 51: Stainless steel with a 10K GF bezel
- 52: All 10K GF case and bezel
All have a 505 movement but with a micro-adjuster on the regulator for more accurate time regulation. The 52 seems much rarer than the other two. The 51 is very similar to the Hamilton Clearview.
As you can see, over the years I’ve had many Railroad Specials. Being relatively large at 37mm, they are very wearable despite being 45 years old. All have a screwdown back and date from mid 1960s.
Now a few group shots: