Great question!  That was TIME AND AGAIN, originally commissioned by ACE for the book by Clifford D. Simak.  It was a very early cover c. 1975.  Many album covers featuring Michael’s art were licensed under secondary rights.  This was definitely an obscure one as I hadn’t see it before.

The illustration was also collected in Michael’s first book </em>Wonderworks</em> (Donning 1979), which is long out of print but there are copies still floating around on the secondhand market.