Value of a Deckel

I am looking at a Deckel, older model. Decent overall condition, comes with indexer, broach/slotting attachment and many other tools and possible attachments. The owner doesn't really know what he has. I don't have any other information and the owner is not able to provide anything else and would prefer someone come take a look at it.

The owner was not sure of what to ask, but said make me an offer. I don't know what to offer on this machine even if I was there to look it over.

Leaning towards it being an FP1. But not positive.

Any suggestions?