Hello Franek!
Yes you are quite right. Please see this 305 Sqn Battle Order for 20/21 Feb, 1945:
http://www.geocities.com/skrzydla1/3...tleorder_1.jpg
Could the Mossie (SM-)G "PZ299" in the list be the one in the photo (= actually PZ 399 or is it indeed PZ299)? The order has also Susi/Pruszynski (SM-)B PZ401. So the two particular Mosquitos (PZ399 & PZ401) might have served during the same period.
Regards,
Kari