I'm trying to replicate some of the original bits that came with our cars new. I have seen a couple of different pictures of this tag on other owners keys but have not gotten a clear answer as to what is on it. I would imagine it's either the key code however this is usually plastic in my experience, or possibly the tub number or maybe something else. Can anyone assist? Ultimately I would love to get some detailed photos and measurements.

 

Ive owned nearly every model porsche over a 50 years span and have never seen that metal tag

Someone likely has though

Good luck

 

Just realized that is my picture. It is the factory key code. on the opposite side. You can order a key by having that code. I have it for my 928GTS as well which has the original keys. There is also a paper tag which I am missing that came with the keys.