Formerly BSG Grading

Diamond Service Grading (DSG) is the new label and company name for BSG Grading (Best Service Grading).

DSG is an experienced sports and collector card grading company and has been grading cards since 2001

Contacts

We are located in California in the San Francisco Bay area.

Ship all orders to the following address:

Diamond Service Grading
PO Box 3550
Rohnert Park, CA 94927

707-755-7101

[email protected]

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