I have two LEICA HC PLAN 10X/25 Eyepieces in excellent condition.
From LEICA high end research microscope.
Black anodized surface show some fading, Optics are clean and clear.
One has fine crosshair reticle in it.
Both have fine dioptric adjustment.
Long eye relief, estimated AFOV is 55~60 degrees.
High contrast and very sharp image, perfect for Bino-Viewing.
30mm barrel, You can build customized adapters or simply use isolation tape to make them fit 1.25" eyepiece holder.
$210 USD for one or $400 for both including paypal fee and air mail shipping to USA.