US Presidents Issue
1938
There are 32 stamps in the Presidential Issue of 1938 (excluding variations) and they range from ½c to $5. The lower denominations from ½c to 50c were rotary press printed whereas the 3 higher denominations $1 to $5 were flat plate printed.
Each stamp, except for the 1½c and the 4½c, depicts the portrait of a US president along with the presidents name and in some cases his period in office, e.g. the 2c stamps is inscribed 'JOHN ADAMS 1797-1801'.