In my ‘quick buying guide’ to Challenge Timer (‘Bullhead’) chronographs I have described how the original ‘base metal’ cases have a satin finish rather than being polished and shiny – these are typically the 67-9011 models. The only highly polished finish is found on the one full stainless steel model – the 67-9356, which is easy to spot since it’s an octagonal design.
For reference here are three images – the first two are from Citizen’s own historical site and the satin finish is clearly shown (note the original bracelet types and different crown sizes) :
And here’s a third example, this time from what I call the ‘museum’ book:
Sometimes refurbished models have been polished, and there are examples of gold and black coated cases being de-plated and then nickel plated and highly polished.
I’ll add these three pics to the chronograph article.
Sweephand's Vintage Citizen Watch Blog 
Bullhead 8110 has gray dial with gray subdials. seconds subdial has orange and blue sections painted with seconds markers of white color through the orange sections. Seconds hand is yellow, subdial hands are yellowy orange. No numbers on the main dial. No Tachimeter writing anywhere. DAY window has Asia hieroglyph marks instead of replaced TUE WED SUN etc. Case is chrome plated highly polished the ring around the crystal is black.
Hi Jascha, looks like you have one of these, with a polished case:
The multi-coloured sub-dial is actually the minute counter, rather than seconds. Is yours the same? Stephen
Hi Stephen, could you share with us what model this is? It’s characteristics do not seem to match any of the watches on your own reference guide (https://sweep-hand.org/want-an-original-citizen-bullhead-a-quick-buying-guide/). Cheers!
Hi David, thanks for visiting my blog – can you please confirm which model you are asking about, if poss with a link to an image? Thank you. Stephen
You replied to this comment.
Hi David, thanks – I had been looking at the wrong post! The model you are asking about is a 67-9011 – it is listed on the page about original bullheads, but only by the black or grey dial note. I should make it clearer that it also has a different dial design with printed, not applied, Citizen logo. Here’s recent post about it: https://sweep-hand.org/2020/06/02/todays-watch-citizen-automatic-chronograph-67-9011-2-23-jewels/
Glad to see that you are liking the blog 🙂