Hello Time-Nuts, Well, we have signed a contract for a major house remodel and my storage unit (the old one car garage) is becoming the new kitchen and dining room. So, I am unloading. I literally have a pallet of 5061A/B material that must go very soon. I would like to sell it as one lot. Included is: 1. 5061A - complete, but does not lock. There are several notes that A7 module is bad. There are no spare A7 units in the parts bin, so it will have to be repaired. I think the tube has been tested as working. Ionizer controller is the older AC type. 2. 5061B - complete, with LCD clock, unit does lock but the tube may be very marginal (or perhaps the unit needs a tune up). Unit loses lock quite often, but I think has great potential. 3. 5061B - complete, with LCD clock, unit seems to lock solid. This is the jewel in the lot. 4. One 5061A and two 5061B parts units. Top of chassis are quite bare, but bottoms are well populated (see pictures). 5. Spare Cs beam tube. Unit has been tested and appears to have very good beam current. Probably should be put in the marginal 5061B unit. 6. Large bin of spare parts. There are 3x top covers and 2x bottom covers for the units above. There are several power cord connectors to make up cables, plus several test power cords that have pins that slip on the 5061. A bunch of module pulls. Misc. stuff (see pictures) This material will fit in a vehicle. I am located in Denver. I would consider driving up to 4.5 hours to facilitate a handoff. I'm thinking $1200 would be a steal for the lot. If you are interested please contact me OFF LIST and I will email pictures of all the items above (with the two 5061B's locked). If you would like to learn how cesium beam standards work this is a great opportunity (to learn and eat up some time). Thanks, Skip Withrow