Aetna, 12 line
This type measures 10 line in size and was produced with the end-cut method. The type block is stamped Hamilton, Two Rivers, Wis. which was used by Hamilton between 1891–1950s.
This face was first shown as wood type by William H. Page in his July, 1879 Page’s Wood Type Album.
Caslon was shown in American Wood Type on page 238, but was not shown in the folio.
Type name used by manufacturer:
Hamilton Special or No 6065
Morgans & Wilcox Old Style No 1 
Page No 119 
Tubbs Old Style No 1 or No 2096
This is the Hamilton cut.