I agree with Zak. Original collars, later homemade scales. The blonde horn you were talking about - most likely horn that had been dyed to a darker color. After age and wear you can see the light horn peeking through around the edges. While not rare, tortoise is uncommon. Blonde, mottled, and dyed faux horn were commonplace and are often confused for tortoise, but once you see the real stuff you know.