I came across a huge lot of Atari service center stuff ranging from the 2600 on up.
I don't need all of it since there are multiples of most items.
Heres what I have available:
2 Atari 400 48K RAM expansions (new in box, boxes are roughed up quite a bit)
Atari 810 Master Diskette II (Boxed, but box is rough)
Atari 400 SALT Version 2.07 (untested but appears to be in good shape)
Atari 5200 TV antenna switch box and switch box adapter (new in box, box is rough)
CX40 Joystick cable
3 Start Pause Reset buttons (5200, new, Part # C018128)
800 Power supply? Part number C014176 (untested)
4 5200 controller shells (new in bulk packaging)
Peripherial Port Jump Part number TE15659
2 Controller port short plugs Part # MA017602 (pending)
Random motherboard Part # C017145
Random motherboard Part # C014706
64K RAM expansion CA061553
I also have a few thousand IC's, transistors, resistors, capacitors, controller cables, knobs, potentiometers, etc. So if you need a specific part I may just have it.
Sorry for the long post, just trying to clean up. I've had this stuff for nearly a year.
PM if you would like to make an offer on any (or all) of this stuff. I have a long (positive) track record on eBay and Amazon so packing stuff safe and secure is nothing new to me.