I recently bought my first C-case constellation! (168.029, 1969, gold capped, cal. 751, linen dial), it has a few non-original parts like the crown and the second hand has been painted red at some point. So I've been looking online for a replacement crown, but I can't seem to find any info on the correct one for this watch. This site was recommended, but I've checked and they only seem to supply stainless steel crowns for the 168.029.
http://www.ofrei.com/page_147.html.

Does anyone have any ideas?

I'm also interested in getting it serviced, does anyone know whether it's possible for a watchmaker to remove the red paint from the second hand?

And finally, does anyone know what strap/bracelet would have come with this watch originally?

I apologise for all the questions, here's some pics to make up for it!
https://imgur.com/a/N7GDG

 

cousins uk has this for the 168.029
https://www.cousinsuk.com/category/omega-case-parts

 

Thank you! I tried to look on that site, but it said you have to be a trade seller to purchase things from them. Is this true?

 

Sort of.
You have tell them you are a trade seller but a number of members buy from them.
Be sure you get the right spec though because they’re shonky about returns.

 

Cheers for the advice mate. I'll have a look on there now then.