So far, several people described how a package or material should be sent to a collector. Most dealers send it with another name and address on the return label. I send my stuff with my name and PO box on the return label, and nothing to indicate the product is numismatic in nature.
Rent a PO box, under $100 a year.
Keep your mouth shut about your activities, don't tell people you collect anything.
Get an unlisted phone number.
A bank safety deposit box is cheap, for the good stuff!
Home alarms are good, easily defeated however.
Big dogs and the signs of a big dog are good too.
Watch the people at shows, most robberies take place following a show. They follow you, and then case out your place. I know of one dealer who was followed home, his wife and children held a gun point until he coughed up the material.
If no one knows you are a collector, and don't have a listed phone number, and use a PO box, the bad guys can't find you and don't know about you. For those that subscribe to CCN and other publications, such things get sent to a PO box. At this stage in mailings, it matters not one bit what the guy writes on the package, no one sees it anyway, except you.
Use caution, remember, a person with easily disposable goods, like money, is a target. Nothing easier to sell than money, paper, coins, gold, silver bullion. Think like a crook, and react accordingly.
Rick