Current Projects chat and miscellany

hiya

i've laid my hands on some interesting campa record titanium seatpost, but apparantely it comes w/o some parts =)) please see pic below.
now, i've tried some parts from other (non-campa) seatposts i have at home, but they wouldn't fit
basically, i need that top part, which would fit. please help - of someone has it, know where to get it, or know how to correctly ask for it. thanks!

You need a clamp, and it will need to be a very good fit.