So far the only pre-war or vintage card purchases I've found are T206's and the majority of them are previously confirmed signed subjects.
I'm posting scans so people can check their collections and also keep an eye out for any fakes that might come up for sale.
I will add any new ones that I find in this thread.
The date of purchase is listed with each card. None of these have been confirmed with fake signatures yet.
Barbeau 8-22-15
Barbeau cooperstownsportscards 8-22-15.jpg
Bridwell 2-25-15
Bridwell sg713 2-25-15.jpg
Carrigan 2-25-15
Carrigan sg713 2-25-15.jpg
Crawford 2-22-15
Crawford 2-22-15.jpg
Doyle 4-23-17
Doyle nineunder71 4-23-17.jpg
Meyers Portrait 3-15-15
Meyers JVSC 3-15-15.jpg
Myers Batting 2-26-15
Meyers sg713 2-26-15.jpg
Parent 1-11-15
Parent 707sportscards 1-11-15.jpg
Sullivan 11-21-16
Sullivan t206rg 11-21-16.jpg
Warhop 4-11-17
Warhop goodmansportscards 4-11-17.jpg