Dewey's site again
https://vicknairgunsmithing.blogspot.com/2016/01/an-unbiased-look-at-design-of-american.html

This is the full size image enhanced and rotated to get the SN which looks like 8685 which would be about 1935
The screws and barrel stop have been removed and the lumps have been separated; there is obviously no solder.

[Linked Image from photos.smugmug.com]

Click on Dewey's brief video and he moves the 2 lumps back & forth demonstrating the dovetail adds little to the strength of the lump.