It is the same car indeed. It's not a period drawing, and to me it looks like it was based on another picture of this car, taken after its modification, but made to look like the 1954 version of the car - no cutouts instead of doors, no rollbar, different starting number. Only the rear end was left untouched - probably there was no quality picture of an early version at artist's disposal? The artist is, BTW, Alexander Zaharov - designer of Mart X-Streameast (search the forums) and Formula Rus single seater - this is one of his drawings for Za Ruljom magazine's rubric on classic Soviet cars.
