1930 Model B Parking Light Lens – replacement needed

I found out the hard way yesterday that the ~40 year old plastic reproduction lenses on my 1930 Model B 5 passenger sedan had become rather brittle when I went to change bulbs and replace some worn out cork seals.  The lenses are by no means a perfect match which makes putting the light back together after changing the bulb a challenge – one of those jobs where one person needs three or more hands.  One went back on OK and the other did not.

Are these being reproduced anywhere?  Anyone have a set?  I am not fussed about having glass ones.