Bowens Quadmatic Spotlite: which type of modeling bulb?

Hi, a generous person gave me a Bowens quadmatic spotlite in good working condition. The only thing is that the original modeling light bulb is missing and I didn't find more information about it than that its a 100W lamp.
Is there someone who has one too and could give it a look and tell me what are he specifications/type number of the original lamp?
Thank you very much in advance.
Albert

No one ???

Sorry, can't help, but I have updated your thread title so it's a little more specific on what you're looking for. Hopefully that helps.
One more thing that might help is to post a photo of the unit.

Thank you Koraks!
Ok will do that on Friday.

A model number might help with research.