Psvane WE205D, Western Electronics WE205D Replicated Version. There are two verisons: WE205D and WE205D-L. The difference is between tube socket. If it is the same as the original Western Electric 205D socket (for 4 smaller shorter pins), you need the WE205D Replica. If your amp’s 205D socket is like 300B socket (two larger pins, two smaller pins, all 4 are longer as indicated by the diagram below), you need the WE205D-L version.
Specifications:
Nominal Working Condition Parameter:
Filament voltage 4.5 V
Filament current 1.6 A
Plate voltage 300 V
Grid voltage – 30 V
Plate current 8 mA
Minimum/Maximum Rating: (min, max)
Filament voltage 4 5 V
Plate voltage – 400 V
Plate Dissipation – 15 W
Plate current – 50 mA
Link: here