Series 2 paint codes (again!)

[cbudden]

I am trying to uncover the history of my 1973 S2 Fulvia coupe and was wondering about its original colour..... it was a rather dull (semi) metallic grey when I bought it in the early 80's but am not convinced that this was the original colour. There is a sticker on the back of the glove box but it is not fully legible. It appears to specify Dupont as manufacturer and a code begining with 927 but I cannot decipher any other digits. I attach a lo-res picture. All my searches of the various databases of Lancia paint codes have not turned up any colours whose code starts 927.

Grateful for any thoughts from the collective wisdom within the club.