It was one I removed from a parts truck a couple years ago. It is a bit simpler then the 47-53 version which I have also removed and sold 6-8 of over the years. It is a big job removing and replacing these (I tried to specialize on just removing).
Back when I was selling them they would go in the $150-200 range so cheaper then the repops (I have not seen one for the 54/55)? On the '54/55 the nature of the dash and repair difficulty people liked them whole. On the 47-53 most of the time I just removed this section. Easier, more cost effective to ship.
https://www.flickr.com/photos/advance-design_parts_co/9148000394/in/album-72157631868452754/
I bought and the quickly resold a really nice GMC once just because I was so offended and put off by this.
https://www.flickr.com/photos/advance-design_parts_co/8130479542/in/album-72157631870734114/
I saw this once and thought it was a great idea, one of the vendors should repop these.
https://www.flickr.com/photos/advance-design_parts_co/28831166563/in/album-72157631868452754/

1950 Chevrolet 3/4-Ton 3600
More pictures on Flickr