One of the series of 13 prints issued by. However, interestingly, the imagery of this picture, if compared to the imagery of the "standard" print, looks somewhat misaligned, i. While all the lines meant to be neatly connected, here you can see that some of them have big gaps in between (please see the rhomboid shapes in the'shoulder' areas for example), while some cross each other (such as lines at the bottom of the torso, etc). What I also find interesting is that the frame maker Ernest Wheatley was apparently serving the top end of the market, and the label applied here was likely used in 1950 - 1961 before he incorporated his company in 1961 and added Ltd. To his company name, which immediately coincides with the period when Picasso created the drawing and issued the prints - please see the information about him from the site of the National Portrait Gallery.
I wonder if this could be one of the original artist proofs, and the final imagery was made looking "tidier" on the subsequent prints? Please refer to the photographs for further visual information.