The horns for a 69 Camaro look nothing like that at all. Those are the old style horns with an entirely different bell and the housings are also very different. For the most part, 1969 horns were pretty much all the same across the GM line. The difference was in the brackets. Of course there are different notes so that when you had dual horns you had one low note and one high note so that they harmonized. There are also more than two notes: E F G H etc..... It can get tricky finding the right ones for 69 Camaros if you are not sure about what you are looking for.
Side note: All service replacement horns were the same for all the cars. They came boxed with a bracket that was installed separately so that they could mount to any application. The horn was black and the bracket was just plain plated. The bracket was afixed by a big nut that secured it to the horn. You could not order the exact horns for your car through the Parts department even when your car was new. GM did this to simplify the replacement of horns and as far as they were concerned they did the job as a replacement. That's why you sometimes see these horns in Delco boxes as NOS for sale without a bracket on them. That's also why it is so difficult to come up with a part number. I believe the number John Z gave is the one that will be cast on to the horns you need as they fit only 69 Camaros and all 69 Camaros used the same horn(s).
