Hewlett Packard Model 711A High Voltage Power Supply. The power supply is from the estate of a ham radio operator. It looks very good but shows some general wear. As you can see, the leather handle is split at the front attachment bracket.
In addition, one of the 6.3V locking nuts is missing. I allowed the unit to warm up briefly and it output 426 volts DC. It may output more with longer warm up time, but likely needs new capacitors to get the full rated 500VDC. Great with tube gear and an overall well made power supply.The item "HP Model 711A Regulated Adjustable High Voltage Power Supply==Tube Amps" is in sale since Wednesday, March 24, 2021. This item is in the category "Business & Industrial\Test, Measurement & Inspection\Signal Sources & Conditioning\Adjustable Power Supplies". The seller is "otsonline" and is located in Orland Park, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.