Helen Frankenthaler's What Red Lines Can Do (H. 26), a screen print from 1970 (signed), is estimated to be worth £3600 to £5500 and has sold at auction 2 times. During the last five-year period, the hammer price ranges from £2391 in May 2024 to £2862 in October 2022. This artwork has sold 2 times at auction since its initial sale in 2022. The edition size of this artwork is limited to 75.