General Electric CDS / CDX 500 Watt Projection Lamp NIB Swan Lake Acts 2

General Electric CDS / CDX 500 Watt Projection Lamp NIB Swan Lake Acts 2This new old stock, new in box GE CDS CDX 500 watt projection bulb and its box are in pristine shape. WE HAVE A MODEST SELECTION OF LIGHTING SUPPLIES TUBES. PLEASE CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. LIGHT BULBS ARE GUARANTEED GOOD ON SHIPMENT. IF YOU FEAR DAMAGE OR LOSS OF PARCEL IN TRANSIT, PLEASE INSURE THEM! OUR SHIPPING RESPONSIBILITY ENDS WHEN THE PARCEL IS ACCEPTED AND SCANNED BY THE US POSTAL

new in box RCA 6DS4 nuvistor tube tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 6BJ6 tubes tested to spec on our Paul Hart-calibrated TV7/U

This lot of four RCA 50Y6 tubes tested to spec on our Paul Hart-calibrated TV7/U

This lot of three US-made 5763 tubes tested as follows on our Paul Hart-calibrated TV7/U:

This GE 3CZ3A tube tested to spec on our Paul Hart-calibrated TV7/U

There was no gas and it tested 2170 micromhos with a plate current draw of 25

This lot of eight new old stock

I have played them (with adapters

7 milliamps while transconductance measured 2910 micromhos

There were no shorts or gas and they measured as follows (from left to right

This new old stock-testing matched pair of RCA 6BL7GTA dual triodes was tested on our TV7/U for shorts

They are World War Two vintage and all have US Army Signal Corp SC 278 A codes