Need suggestions for spare parts

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Hi,
my 176.007 needs to be restoring, or at least I think so. I have found the white chrono hand through a user of this forum, but I don't know what to do with the 24h disk. If you see at the first picture, that is my watch, the disk seems to be badly repainted, in the very beginning I could not see the red arrow. I am watching this spare part on ebay - second picture, requested price is not high, less than 40€, but I am pretty sure it is not original and the black seems with grain, matte not glossy. Any suggestion is appreciated, thanks