Which insurance form is required for coverage over $500?

The 3813-P form is specifically designed as the "Payment for Insurance" form for items requiring insurance coverage exceeding $500. This form provides important details necessary to process the insurance for high-value items. It serves as an acknowledgment of the customer’s request for additional insurance beyond the standard coverage limits.

When mailing items valued over $500, the use of this form helps ensure that the item is adequately insured and that any claims can be processed efficiently if needed. This adherence to policy helps in protecting both the sender and the Postal Service's liability in case of loss or damage.

The other forms listed may serve different purposes or cover different insurance limits, which is why they are not applicable for items requiring insurance coverage above the $500 threshold.