Ok thanks for the info..... that seems that SER got total 25 SL coach lhb from RB for this train... other AC coaches r new or old coaches except B1 and A1.? ..........but the bad habit of SER of mixing duronto, humsafar , antodaya coaches with normal lhb is very bad and looks very odd. I dont know what is the reason of this stupid action...... last week in src-anvt exp i saw humsafar eog, duronto livery 3AC, antodaya livery gs all r mixed with red color lhb coaches... it was looking so odd.