I have 6 Sinar DB lens boards for sale. All are in excellent condition. The apertures move smoothly.
They came from the following lenses:
1. 35mm f/4.5 Apo-Grandagon
2. 35mm f/4 Digital HR Sinaron
3. 135mm f/5.6 Nikkor
4. 240mm f/5.6 Symmar-S
5 and 6. Unknown, though I think one came from a Fujinon 180mm CM-W f/5.6.
The 35mm lens boards are 8,000 JPY each, and the other boards are 5,500 JPY each, including International ePacket shipping, which includes tracking.
Photos coming soon.
Thanks for looking,
Kumar