40 BULLETIN 105, UNITED STATES NATIONAL MUSEUM. 



Bureau of Engraving and Printing : 



Hand-stamped spedmen in small black type. 

 1902: 



10c. Ultramarine. 

 1908: 



10c. Green.* 



Watermarked single line U. S. P. S. 

 1911: 

 Perforated 12. 

 10c. Pale ultramarine.* 

 10c. Deep ultramarine.* 

 1914: 

 Perforated 10. 

 10c. Deep ultramarine.* 

 10c. Pale ultramarine.* 



No watermark. 



1916: 



Perforated 10. 

 10c. Pale ultramarine.* 

 10c. Bright ultramarine. 

 1917: 

 Perforated 11. 

 10c. Bright ultramarine.* 

 10c. Deep ultramarine. 

 10c. Light dull blue.* 

 10c. Violet blue.* 



