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Picked ip this a while ago, these pre-snork coloured sigs aren't that easy to find. this one is near mint, perfect case and unsigned. 

Here's another shot with the burgundy Sig. FP +BP , the signature ballpoint is also a very difficult one to find in my experience. Also a first model snork auto.

While I'm on a TM TD roll here's a "late model" Soverign set in the snork pastel blue, another uncommon set. Note the white dot on the cap of both , not seen on the snorkel models with the similiar cap, and the other interesting thing is the pencil is the slim type common to the snorkel range rather than the larger TD pencil as seen above. 

Regards

Hugh