Hi this a brand new old stock GE  EDS 18AMP-T10-1-6VOLT 108 Watt projector lamp bulb.  It is for microscopes and many other applications.  They have not made these bulbs for years and there is no known substitute.  

The only place that i have found that has any of these bulbs sells them for $991!!!!   This is a great deal if you need these because they do not exist anymore.

EDS/6V/108W/E26 ANSI bulb specifications:
			clear glass filament size:2x14mm microscope lamp

EDS/6V/108W/E26 ANSI
also known as
Cross-Reference:

6VOLT-18AMP-MICROSCOPE-ILLUMINATOR GENERAL-ELECTRIC
6VOLT-108WATT-MICROSCOPE-ILLUMINATOR GENERAL-ELECTRIC
18A-T10-E26S-CLEAR-SR8-6V
18A/T10/1
18A/T10/1-6V
18A/T10/E26/CL/SR8/6V
18A/T10/MED/CL/SR8/6V
18AMP-T10-1-6VOLT
18AMP-T10-1-ILLUMINATOR GENERAL-ELECTRIC
18AMP-T10-1 GENERAL-ELECTRIC
108W-T10-E26S-CLEAR-SR8-6V
108W/T10/1
108W/T10/1-6V
108W/T10/E26/CL/SR8/6V
108W/T10/MED/CL/SR8/6V
108WATT-T10-1-6VOLT
108WATT-T10-1 GENERAL-ELECTRIC
23388 GENERAL-ELECTRIC
DYZ
EDS-6V-18A-E26-T10-R8-CLEAR-150H-BD-5-1/2MOL-3-3/8LCL-I-MICROSCOPE-ILLUMINATOR-SOURCE-WXH-2X14MM
EDS-6V-18A-E26S-T-10-R-8-CLEAR-150H-BD-5-1/2MOL-3-3/8LCL-I-MICROSCOPE-ILLUMINATOR-SOURCE-WXH-2X14MM
EDS-6V-18A ANSI
EDS-6V-18A ASA
EDS-6V-18A DONSBULBS
EDS-6V-108W ANSI
EDS-6V-108W ASA
EDS-6V ANSI
EDS-6V ASA
EDS-6VOLT ANSI
EDS-6VOLT ASA
EDS/6V/18A/E26S/T-10/R-8/CLEAR/150H/BD/5-1/2MOL/3-3/8LCL/I/MICROSCOPE-ILLUMINATOR/SOURCE-WXH-2X14MM
EDS/6V/18A ANSI
EDS/6V/18A ASA
EDS/6V/18A DONSBULBS
EDS/6V/108W/E26 ANSI
EDS/6V/108W ANSI
EDS/6V/108W ASA
EDS ANSI
EDS ASA
EDS INTERLIGHT
I/6V/18A/E26/T10/SR8
I/6V/18A/E26/T10/SR8/85MMLCL
I/6V/18A/E26/TUBE/SR8
I/6V/18A/E26/TUBE/SR8/85MMLCL
I/6V/108W/E26/T10/SR8
I/6V/108W/E26/T10/SR8/85MMLCL
I/6V/108W/E26/T10/SR8/85MMLCL/50H/EDS ANSI
I/6V/108W/E26/T10/SR8/CL/EDS ANSI
I/6V/108W/E26/T10/SR8/EDS ANSI
I/6V/108W/E26/TUBE/SR8
I/6V/108W/E26/TUBE/SR8/85MMLCL
PH-18AMP-T10-1
PH-18AMP-T10-1-6VOLT
PH-108WATT-T10-1
PH-108WATT-T10-1-6VOLT