I tested this head and it functions properly. I purchased it new. Fan works as does the modeling light. All lamps are old, so no guarantees regarding their remaining life.  The flash tubes show signs of use and wear. three out of the four have cracks and chips in the protective glass tube covers.  I've indicated some of the damage to the tubes in red.  They are 1200 watt-second tubes. I spoke to Speedotron and learned that the 104 head can be made even more powerful by inserting a quad of 2400 WS tubes- assuming you're running a pair of 4800 WS packs you'd get 9600 WS. I ran this head in a large light bank, connected to a pair of 2400 WS pack which yielded a maximum of 4800 WS output. The protective cover has a few dents but fits ok. 

Please regard the used flash tubes and modeling lamp as "extras"- this offering is really the flash head itself. They enabled me to test the head. 

I have tried to illustrate the cosmetic condition as accurately as possible. Please examine the photos closely. If you have any questions, please ask. I'm proud of my 100% positive feedback on eBay and intend to keep it that way. If for any reason you, the buyer, are not happy, please contact me immediately and I will make things right- that's why I offer a two-week return period. Shipping includes insurance. Thanks very much for looking.