On Friday, July 19, 2013 5:01:00 PM UTC-5, wrote:
Cant be 100 % sure but that does not look like a Discus 2a wing tip.

Rolf

I think Its the same D2a that belonged to Mr.Galetto. It is is the Polish National Team glider, they also own another one, but strangely this one even being form early of production, is of lot better quality than the later production number ones. Interesting proof of that theory is the Lak 12T prototype beating the crap out of several Arcuses and Duo Ds XLTs after several days of competition.
http://www.egc2013.eu/results/20m/37J_20m_tot/
GK