I have seen two similar sized anvil patterns since I bought mine.
In this picture the pattern is in the background and a
bronze casting is in the foreground.
I have now seen three similarly sized anvil patterns! I bought a slightly
smaller anvil pattern today at a resale shop!
I had the anvil halves cast separately in aluminum. I placed four
pairs of them on a pattern board. The resulting aluminum casting is shown
to the background. In the foreground is the original pattern and the tip of a
bronze anvil casting can be seen the the lower right corner. A few cut apart
aluminum anvils can be seen in the upper right corner.
Here is the top (cope) half of the pattern board. The board
is sized for a 12" x 18" flask.
Here is the other side (drag or bottom half) of the pattern
From page 89 of Exploring Patternmaking and Foundry by Miner and Miller
1939. It's out of print and would be the one pattern making book to have if
you were only allowed to have one.
A more recent acquisition from a Mwtca tool meet:
Some sort of anvil die? and an aluminum sand casting of
whatever the die produced. It's marked Purdue so I'm
guessing it was some sort of class project? The die appears
to be made out of lead.