By the end of the 1950s, he was invited to study at the Royal College of Art in London under the British Council postgraduate scholarship programme.
His UK stay was so prolific that a year later, in 1960, Henry Moore himself opened Petar's solo exhibition at the Grabowski Gallery in London.
In 1960, he joined the group Mugri in Skopje and started his series of Masks (1961-3), crafted from welded scrap-metal sheets.
In this period, he produced tall, mineral-like objects in polished metal, as well as massive clay blocks with richly faceted planes glazed in vivid colors.
[2] In 2004, Boskov creates a monument, in memorial, which shows various phases of the life and works of Panko Brashnar, a great Macedonian revolutionary.