We have a package of 8 vintage Birthday cards.  They are for young children learning to write and have lines to fill in the name, year and their name.  They measure about 8 1/2" x 5 7/8" and have envelopes with them.  They are dated 1989 "Kards for Kids" and are a creative learning product.  The package has been packed away for many years therefore there is a slight "wave" to it but place something heavy on it and I'm sure it will flatten out - it is not bad at all could be used as is.   

Child's Birthday Cards Learn to write nos