I inherited an unopenned quart bottle of silver cyanide plating solution from my father who dabbled in watch repair in the 1950s.
I'd hate to dispose of it as household hazardous waste.
What is it worth?
Is there anyone near eastern connecticut that would be interested in it?
I assume it cannot be shipped safely through regular mail.
I suggest you check with some local silversmiths or jewelers. There are probably restrictions for shipping the solution.
A 1 quart bottle of silver cyanide currently sells for under $30. It might be best to take it to your local hazardous waste.