Unusual Disston Brick Trowel Patterns

These arrived last week via eBay. After cleaning them, I found they were all on page 203 of Disston's 1918 catalog, although these are probably earlier than 1918. From top to bottom:

Disston Boston pattern, 7 inch, good etch

Disston Lowell pattern, 7-1/2 inch, faint etch

Standard Brand by Disston Cucumber pattern, 7-1/2 inch, faint stamp "STANDARD"  

Disston Boston, Lowell, Cucumber pattern brick trowels

The same trowels before cleaning