International Autograph Auctions Europe had an auction today of Autograph Letters, Historical Documents & Manuscripts . Sylvia Plath's unfinished drawing of a village church and cart was in Lot 437 . Ted Hughes signed the back as a way to authenticate it as being drawn by his first wife. The estimate placed on the drawing was €2,400 - €3,600. This is roughly $2,173 - $3,912 and £1,847 - £3,325. The drawing sold for €3,000 /$3,257.78 /£2,758.86. All links accessed 24-25 March 2020.
Sylvia Plath Info Blog by Peter K. Steinberg. The blog of A celebration, this is.