10 Piel Bros pressed cardboard beer coasters featuring the Bert and Harry characters. The coasters are 3-1/2 inches in diameter. Printed on the edge is (C) 1957 Piel Bros., Brooklyn, N.Y. with a 5 within a circle. There is a union logo that is too small to decipher and the number 62. These coasters don't look like they were ever used. 3 of the coasters have some brown staining on the fronts. The rest look like new on the fronts. 6 of the coasters are written with "Do not throw away! !!!" on the back. All are lightly yellowed with age.