-40%
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS
IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS

IEC/Mullard 6267/EF86 Audio Pentode Philips Code Blackburn NOS

$ 17.43

  • Brand: IEC/Mullard
  • Country/Region of Manufacture: United Kingdom
  • MPN: 6267/EF86
  • Model: 9-pin
  • Seller Notes: “NOS writing is worn”

Description

IEC/Mullard 6267 Audio Pentode Philips code on tube: 8Y1: BY means 6267 B4J2: B means Blackburn factory 4 is the year code (probably 1964) Solid plate Halo getter 2 seams at top Writing on tube is mostly worn away, but part number can be seen. Source code on tube 1022: IEC This style box that says "electron tube" begins somewhere in the mid-60s (using Lafayette catalog pictures). Boxes in the 1970s were a different color. Transconductance reading: 104 Tested for transconductance with B&K 747 Good/green on meter is 65-120 100 meg ohm grid emission test Tube is allowed to heat and then gently tapped to check for mechanical shorts. No grid emission, gas, or mechanical shorts. Life test good This tester is set to factory specs and checked regularly. The item in the picture is the actual item that the buyer will receive. Securely packed for shipment. Combined shipping for multiple items. Unused shipping charges refunded. I will be happy to answer any questions