The knobs on the second one are definitely not original. The gold knobs are only used on the BD-2 and OD-3 (maybe I forgot some other pedal but they were never used on the CE-2B).
I heard that the CE-2B is awesome for guitar, because it has the level control (which of course is missing on the CE-2), and I always wondered what the CE-2B would look like with the SD-2 knob layout like in this pic.
Something that crossed my mind is that, what if a technician at the factory in japan wanted to do something funny and every 1000 pedal he made he made it completely different. strange bottoms etc.