As it relates to the last stamp (Christmas Seal with Laennec portrait), here's the detail as to that 1938 Christmas Seal Issue as excerpted from William J. Kozersky Stamp Co. blog:
Quote:
Portrait Christmas Seals have pictures of people famous in the fight against Tuberculosis, and other lung diseases. They were issued in 1938 and 1946. (Green's v1, p7)
The 1938 Portrait Seals were located in the four corners of the sheets and were different than the other ninety-six seals. The four portrait seals contained the images and names of four men active in furthering the work to eliminate TB.
Seal #1 shows an image of Dr. Rene Laennec of France, who in 1816 invented the stethoscope.
Seal #10 shows an image of Dr. Robert Koch of Germany, who in 1882 proved TB to be a germ born disease.
Seal #91 shows an image of Dr. Edward L. Trudeau of New York, who in 1885 established the first United States TB sanatorium at Saranac Lake, New York.
Seal # 100 shows an image of Einar Holbell, the Danish postal clerk who in 1904 started the sale of Christmas Seals in Denmark.
The 1938 Portrait Christmas Seals are usually collected in blocks of four; one portrait seal with three regular seals.