| Business | Phone |
| Baltimore Coin & Jewelry Exch 10194 Baltimore Natl Pike #104, Ellicott City 21042 | (410) 418-8282 |
| Corkran Enterprises Inc 4705 Ilkley Moor Ln, Ellicott City 21043 | (410) 461-6809 |
| Rare Coin Svc Inc 11004 Bittersweet Ct, Ellicott City 21042 | (410) 730-3944 |