Peace by piece $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Peace by piece quantity Add to cart SKU: 1008. Categories: Christmas - Holiday, Peace. Related Products One if by Land $20.00 Warm Christmas Wishes $20.00 Vitamin XC $20.00 Snowflakes Pinecones $20.00