Seems nearly the same as the default skin, in design. 'Course I think the default is WAY too dark, so go for it.
I'd say look for similar profiles, if you can't find the exact. Most BOB era are similar. Looks like almost no mottling on the sides (it would be mottling of the RLM 70 or 71 colors, and you can see those, but not on the lower half) I've got a profile of a 109e (e7?) with a similar low-spine but no mottling, from Holland. It's not unheard of.