I also noticed from the original catalog illustrations that the two dogs shown were slightly different in height (though I could not read the height listing). However, the catalog illustration of the dog on the left shows a different length of front leg and that one seems to match closer to the one I have than the later version. From this, I am making the assumption that my doggie was made in the 1870 time period. Again, I am greatful for Sid's long memory, as this could easily have gone a long time as a mystery to me!
Dave