Hardock

I picked up this painting of Hardock at a Salvation Army store, just liked it. Doing some re-search the tag from the framing place had Detroit 23, MI The 23 went out in 1963 for the 5 digit zip code. DuMouchelles in Detroit had one of his paintings in auction listed for $3000 a few years back. The framing company, Bilderback's also has reverse paint beveled glass but the sticker had no zip. Taking what I know so far is that the paintings were probably between 1940 and 1960.