Hiker 12, I removed the slide from my Underwood to see what it had on it. It turns out it is a type 3 marked "F" in a heart along side .u. Inside the bottom of the slide well, no flaming bomb. That didn't clear anything up. I looked in a couple of books I have and they say type 2 slides were marked ".o.u. In a circle inside the bottom & 'F' outside on bottom . Later type 2 slides had a large .u. in a circle on the inside and occasionally a flaming bomb was used on the outside bottom. I couldn't find anything about the handle, but that doesn't mean that they didn't , there is more info out there then I have.
Thanks guys for the input.I bought a slide that only had a .u. in a circle on the inside of slide no bomb. Everything I have come across came the way I described or just with a u no circle. so much junk out there. should just keep this for plinking and search for collector grade for the next one. Thanks will talk to you later.