Where to find VIN 73 plate reproduction?

[Burint]

I have this plate came with my 73, 911 T in a very bad condition.
Where can I get the reproduction of this for my restoration?
I used to write to Porsche Germany and request the plate with my proof of ownership for my 86, 930 3.3. Unfortunately, they discontinue making those aluminum plate.
The best thing they can do was sending me a certificate in writing and some stickers of the WPO. (996 style) and that was $100 to get all that.
Burint