Full Case of GB GE F36W/827 Fluorescent Tubes

Always wanted a full case of GE Polylux tubes in color 827 and now I am proud owner of a full case of Great Britain made GE Polylux F36W/827 tubes. Too bad that these are not the Hungarian GE tubes but that doesn't matter since GB GE made tubes are overall much rarer in Lithuania and much more sought after! An amazing color! I have compared them side to side to Philips 36W/827 and I do notice a slight difference between them two, I would say that GB GE one is softer and more yellow while Philips one is more orange. I also would like to know what is the date of manufacturing, if anyone can help with that, I would appreciate that very much!