Grandpas coins
Vallejo, California
- Address
- 151 Mountain View Avenue, Vallejo, CA, 94590
- Phone
- (707) 641-3086
Grandpas coins in Vallejo, California is a U.S. Coins, Bullion dealer listed on CDXList.com. Contact the shop for current inventory, buy/sell pricing, and hours.
Dealer location
Shop address — not a coin show venue.
Collector notes
Visiting a coin shop
A few notes before you walk into Grandpas coins in Vallejo, CA. These rotate daily. They are general collector etiquette from CDXList — not this shop’s house rules. When something is unclear, ask the person at the counter.
Do not walk in at closing with a suitcase
Five minutes to close is time to pick up a hold, not to dump an estate. Large lots take time to weigh, look up, and talk through. Call earlier in the day and ask when they can give you a proper look. A shop that is locking the door still has to balance the register and get home.
If you set a time, be on it
Some shops work by appointment on bigger lots. Be on time. Call if you are late or cannot come. The slot they held is time they did not give someone else. Reliability gets you invited back.
Do not crack a graded holder in the shop
PCGS, NGC, ANACS, and CAC holders are part of the product. Opening one at the counter to “see it better” can wreck the value. If you want it out, that is a decision you make at home, not a demonstration.
This is a working shop, not a museum desk
They will talk coins. They will not give a free seminar on forty pieces while a line forms. Pick your best questions. Buy a book if you want to learn the series. A dealer who teaches a little is being generous with the clock.
Online asking prices are not what a shop pays
A listing, a completed auction before fees, and a dealer buy price are three different numbers. Screenshots of asks are not a bid. Bring the coins. Let them look. Then talk. You will get further than arguing from a tab on your phone.