This is a 1929 Specialty that may have been nickel plated by Hunter Arms
Others are out there. This is part of a letter I received from Bruce Miller in NY regarding a nickle plated gun he took to the Ithaca factory for restoration
"NEVER say NEVER when it comes to a Smith. Had you been able to speak with the men at Ithaca, you would have been educated in short order about just how small the gun community was. Equipment was shared as were employees. These guys knew each other and they swapped technology. As I shared previously, the moment the plates came off my guns the Ithaca boys knew exactly who had finished my two guns. They spoke of these two men as if they worked at Ithaca and had gone out for lunch."
It's all conjecture however until Dr Jim Stubbendieck finds documentation in the Hunter Arms records.