If It's the Birthday of Someone Special, Sometimes My Cat Goes Overboard. Cute Vintage Cat Birthday Card; Cat holding cake and flowers. This is an edited and reprinted vintage card, not an antique card. It is a completely authentic design from the late 1800s which has been modified to add some contemporary flair. PRODUCT DETAILS: This is an 3.6" x 5.5" card, digitally printed on 100% recycled, 100 lb. luxurious cover stock. This card is blank inside, and it comes with a 100% recycled kraft envelope and wrapped in a clear plastic sleeve.