| You need to check with your state Department of Agriculture. Most states have laws governing egg sales. Most require that the eggs be clean and in clean, new cartons. They must be refrigerated or kept in a cooler at a certain temperature. I think here in KY if they're older than a month they can't be sold. In all liklihood your local extension office could also provide you with your states rules and regulations regarding the sale of eggs. Here's something from the Michigan Dept of Agr. Q&A
Must an egg producer selling shell eggs at the farmers' market keep those eggs refrigerated? Is the producer permitted to re-use labeled egg cartons bearing another distributor's name and address on the carton?
Eggs sold by the producer must be held at refrigeration temperatures at the farmers' market. This is because eggs are capable of supporting the growth of Salmonella. The labeling information on a carton identifies the type of egg, size of the egg, grade of the egg, and the name of the responsible party and address. Law does not permit re-using egg cartons or other packaging materials bearing the identity of another producer. Farmers selling eggs of their own production are not required to hold a separate license at a farmers' market if they are already licensed at their packing location. Vendors selling eggs not of their own production are required to hold a food establishment license at a farmers' market. That makes it sound like you have to have some sort of egg license at your place of origin Janet | 
