No, they're not toys, they're
Harp-Mandolins, circa 1910-1920. The "true"
harp-mando is the Knutsen on the left (with its 4 tunable
bass strings), and on the right is one made by Dyer.
But until we can conclusively date the instruments in
question, we're stuck with various scenarios: Whomever
designed Dyer's instruments based the body on Knutsen's
"Double Point", simply moving the points to the same
side, or Knutsen copied the points from the Dyer mandolins
or the two parties somehow worked together to come up
with these ideas.
Ideas which they fine-tuned as desired. Like
the Dyer Symphony harp guitar, the designer of the harp
mandolin family is unknown, but is presumed to be one
of the Larson brothers.
What we do know, is that there is no need to explain
the smile on Gregg Miner's face-- he owns them both!