Hi All, I have 5 pcs HP 58503A and I want to sell 2 of them. all unit has a new meanwell PSU. one 10MHz output. one 1PPS output.I have the timelab mesurement with SR620 result against SR625 and another 58503A if some interested please contact me offline.I ask 250 USD include shipment to all the world (exclude tax). Thank You.Anton