Unrecorded 1908 Matte Proof (Gouby C+c; Freeman 2+C)
Note: Peck recorded a proof (P2217) but does not describe it as Matt/Matte, and Freeman recorded a Bronze Proof (F167)
Example 1
Sold by Spink NY in June 2014
Sold by Baldwins in December 2014
PCGS pictures below