By Email
JHE@ancient-coins.com


By Mail
Jencek Historical Enterprise, Inc.
205 De Anza Blvd. #149
San Mateo, CA 94402
U.S.A.

By Phone
(650) 804-4841

By Appointment
We work by appointment and can be reached by email or voicemail. We will try to suit your schedule and can arrange to see you evenings or weekends.  Our office is south of San Francisco, just 30 minutes from San Francisco or 15 minutes from the San Francisco International Airport.