Tasha Tudor Be Mine Cards In this image the green garden and cheerful scene show the size of the mailbox is as large as one's imagination can make it. This is a sweet scene of Valentines Day in a green garden with doves, flowers, children, cat, corgi, and special mailbox. Size: cards are 5" x 5 3/4" with 5 x 7 envelopes to avoid extra postage when mailing. Interior: Blank. 8 cards/envelopes. Printed in USA.