Depending if it's cards or memorabilia, due to size, I have my most valuable cards in a large safe deposit box. I was there today. I showed the lady my T206 Matty proof and said it was worth several thousand dollars. She seemed interested and I told her I have a 1200lb monitored alarm, jewelers safe at home...but the safe deposit box gives me more of a peace of mind. She said no matter what ( I guess except a bank robbery of the boxes) that the cards would be safe with the sprinklered alarm and steel construction of the safe there. It is the best $100 a yr that I spend. Otherwise I don't know of any other insurance agencies that would handle collectibles specifically though there are probably some out there. CIA is what we use for our auctions and so far so good.....(knock on wood
) Maybe someone else will know of another source...