Looking through my dies - 1 set I removed from a Phelps Head, they were not knurled and colored Black..(.45 ACP)
The other set, not knurled and not colored..(.38 Spec.)
No markings on either set....
I've been cleaning up my No.2 Star, These dies came from the acquisition of that Star
On the 3rd Phelps head there was a set of .38 Spec 'CARBIDE' dies & marked .38 Spec & 'Phelps'