However, showing subject consistency is the rule that applies and gives your cover the personality you want it to have. Seeking several signatures on a FDC comes with a chance that your cover may not be returned to you. I have a cover with seven signatures and plan to add several more. This suggests some sound advice. If you cannot afford to part with the value or sentimentality of the item, you are wise not to send it.
Some individuals read their mail while others never do.
Even those who read their mail may employ a person to read it or sort through it initially. There are no guarantees in this hobby so weigh your benefits against your risks and see what wins the battle of your situation. The risk may be worth taking. You can have fun by browsing the flea markets and places you know having collectibles especially old postcards stamps and books. The address is 47 Richards Avenue in Norwalk, Connecticut 06857.