I posted this in the classifieds, but I'm also putting it here in hopes the right person will see it.
My Stewart horn has lost its plunger and handle. I hope somebody has them to sell, or to lend so I can copy them. The horn model is 114-A or 14-A (not sure from data plate), but I don't know if the same parts were used on different models.
jelf1 at cox dot com
Unless someone here has a parts donor for you, the best bet is to pick up a junker at Hershey and rob the parts you need. I'm not aware of anything being reproduced for these horns. They are fairly common. As aftermarket items they ended up on all kinds of cars including Model Ts.
Steve: Perhaps Bill Randall, The Horn Shop, Rome NY can offer some assistance. 3 one 5 three 3 6 eight eight 4 one. jb