Va = 1,23 Vs
Va clean @ 44000 lbs : 130 Kts
Va clean @ 64000 lbs : 157 Kts
Va clean @ 54000 lbs (near actual landing weight) : 143 Kts
For Icing conditions add 20 Kts, hence min clean speed was about 163 Kts.
Post # 361 states speed prior selecting gear and flaps was 134 Kts...