Surplus Shed lenses, one positive with 2600mm focal length, and one negative with -800mm. While I can see sunspots, I can't see almost any structure in them, and there is a lot of chromatic aberration. A bit of experimenting suggests that most of the chromatic aberration is due to the negative lens, so I've ordered a -1000mm achromatic lens. We'll see if that improves things.
While ordering from Surplus Shed, I also ordered a 15mm focal-length Hastings triplet. If it does not make a good planetary eyepiece--I will certainly will try--I will have a nice 15X loupe, replacing my 15X plastic-lens loupe (which is usable, but only in the center of field).