PAIR-A-PHRASE (NATIONAL STAMPING MONTH) To celebrate National Stamping Month, Close To My Heart is offering a free DOUBLE stamp set with a purchase of $75 or more. This very special stamp set actually includes two sheets of stamps in a single stamp envelope and has a retail value of $35.90. The set includes lots of clever phrases and coordinating images that can be used for handmade cards all year, for many different occasions, or even no special occasion at all.