▁to ▁reflect ▁the ▁turn over ▁made ▁by ▁the ▁Congress ▁of ▁the ▁Philippines ▁to ▁the ▁National ▁Museum . ▁Also , ▁the ▁serial ▁number ▁was ▁moved ▁at ▁the ▁top ▁of ▁the ▁den om ination ▁that ▁was ▁located ▁on ▁the ▁lower ▁left ▁side ▁of ▁the ▁bank note . ▁ ▁New ▁Generation ▁series ▁( 2 0 1 0 – present ) ▁In ▁ 2 0 1 0 , ▁the ▁portrait ▁of ▁Ser gio ▁Os me ña ▁was ▁re vised , ▁a ▁picture ▁of ▁the ▁first ▁Philipp ine ▁Assembly ▁and ▁Os me ña ▁and ▁General ▁Douglas ▁Mac Ar thur ' s ▁landing ▁in ▁Ley te ▁was ▁added ▁on ▁the ▁lower ▁left ▁corner ▁and ▁bottom ▁center ▁of ▁the ▁note ▁respectively . ▁The ▁reverse ▁now ▁features ▁the ▁Ta al ▁Lake ▁and ▁the ▁giant ▁tre v ally . ▁▁ ▁In ▁ 2 0 1 7 , ▁an ▁updated ▁version ▁of ▁the ▁New ▁Generation ▁series ▁ 5 0 ▁p iso ▁bank note ▁was ▁issued ▁with ▁changes ▁in ▁the ▁font ▁size ▁of ▁the ▁year ▁of ▁issue ▁and ▁the ▁ital ic ization ▁of ▁the ▁scientific ▁name ▁on ▁the ▁reverse ▁side . ▁The ▁text ▁" Oct ober ▁ 1 9 4 4 " ▁was ▁added ▁after ▁the ▁word ▁" L ey te ▁Land ing " ▁on ▁the ▁ob verse . ▁ ▁Comm emor ative ▁issues ▁Through out ▁its ▁existence , ▁the ▁fifty ▁pes o ▁bill ▁have ▁been ▁over print ed ▁to ▁comm emor ate ▁certain ▁events , ▁namely : ▁ 1 0 0 th ▁B irth ▁An ni versary ▁of ▁Ser gio ▁Os me ña