Hi.
Are you sure its a -78? Do you have a picture of the caseback and movement? I see in your pictures a dial for a -74 or -76, as it has the medium S letter, and not a tall S like it should have from a -78 forward to the eighties.
Hour and minute hands are definitively wrong and I personally would exchange these if I had the watch as for me these do not look like they belong on the watch.
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