Apple IIc Monitor 9in CRT Beige Tiltable 4:3 and 50 similar items

Vintage Apple IIc monochrome monitor in good overall condition for its age. The monitor powers on properly and was tested with a separate composite video source, where it produced a stable, clear image. Brightness and display controls function as expected. Please note: When tested specifically with the Apple IIc computer that originally accompanied this monitor, the image was unstable and had difficulty maintaining synchronization. However, the monitor displays normally when connected to another composite video source, and that same Apple IIc produces a stable image when connected to a different display. I also tested a second video cable with the same result. Because both pieces work independently, I was unable to determine whether this is an adjustment/compatibility issue between the two units or something that may require servicing. The monitor is therefore being sold as tested and operational with the above behavior fully disclosed. Shows normal cosmetic wear/yellowing from age. Please review all photos carefully for exact cosmetic condition and everything included. Vintage electronics are sold as pictured.