This lamp is now obsolete by Osram/Sylvania.  The Ushio USH-205DP is an alternative to the Osram HBO 200 W/2 L2.

The Osram HBO 200 W/2 L2 is a 200 watt mercury short arc, double-ended. Typical lifetime is 400 hours. This lamp has two SFc10-4 bases on the 17mm diameter x 128mm long clear double-ended bulb. This item is made by Osram, and is also commonly available from no other source but Osram/Sylvania. It is seen as alternative part numbers 69222, HBO100W/2, HBO100W2, HBO-100W/2, HBO100W, HBO100 and other variations.

Mercury Lamp Product Warning: Mercury Short Arc lamps emit harmful ULTRAVIOLET RADIATION, are under HIGH PRESSURE, require a HIGH VOLTAGE ignition, and can GENERATE OZONE (unless designated "OFR".) These lamps get VERY HOT during operation, and remain hot after operation for a significant time. Avoid direct or reflected exposure as this can cause serious skin burns and eye injury. This lamp should only be operated in properly designed and maintained equipment.