this is nos but box and label are so deteriorated I can't read part number. I think it fits 77-79 Buicks but don't know what models.
Definitely prior to 1984, that is when they went "postless" on the radios, and NOT from a Regal...Possibly from a Cadillac, due to the labeling for the vent controls ( off on ). Is there a part number on the reverse?
The back has a number, which I haven't been able to find anything on. Probably a casting number. I don't have it in frot of me and pic isn't legible. This car has similar looking one except something funny at radio opening. https://chicago.craigslist.org/chc/cto/d/buick-electramiles-extra-clean/6457888865.html I'm content to say it is late 70s electra . Whoever needs it would know. Probably are variations in trim and years on wood grain too.