The draw pulls are brass.
Here are my theories about Dwaynes jackets. I originally always looked up to this jacket of Billys and got one made to wear at casual events, it was up until the past few years when more information came to light to start homing in on a more screen-accurate one. The one below I think is the Lesco Leathers.
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I've been looking for months at the jacket that was on Prop store and later the brand got confirmed as Lesco leathers. There are tons of variations out there so whenever I saw a jacket and it didn't have the 'oval' belt buckle or the pocket studs or the side belts I just left it because most are square buckles with completely wrapped belt and no studs. It was only until my idiot self looked in detail at the jacket that I found there was a single centre belt holder that is removed. This jacket is used in the flying scenes and stereo scene so my theory was they ripped the back to put on a harness so the rear belt had to come out which is why its missing and they sewed either a new belt to the sides or split the existing (though on another post in Facebook? someone said this jacket get into an accident which is why it was ripped but I don't think its true). See below for the belt theory.
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In this scene, the arrow doesn't penetrate the Lesco leathers but on another shot the arrow looks glued onto it hence there isn't holes on the Prop store jacket.
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The oval belt buckles I've seen for these seem to be snapbacks. Now, on searching for the jacket on a listing it was said that the same factory that made Schott did Lesco leathers so these 'perfecto' style jackets have similarities but there so far 3 brands have been confirmed which is Schott, Californian and Lesco Leathers. In the promo and the majority of the film you see Billy wearing the Californian one which in the design has them 6 studs around each pocket. It leads me to assume they got a Schott and Lesco Leather jacket and modified them to look like the Californian to replicate the studs (see my Lesco jacket).
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In another scene, the Californian looks like it appears again because it has a bottom belt line divider but these studs are different.
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There is an Instagram post that said the jacket in the photo is screen used and I believe it's from the makeup effects owner of Pauls's original jacket. If this is correct, Billy Wirth has said he owns one of the jackets and also his girlfriend's sister which would mean all 6 jackets (if they was 6 made) are confirmed but these 3 brands are unknown. It could be one of them unknown jackets that are used in the screenshot above.
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So since the Lesco Leathers has more information I figured its best to replicate that out of all the jackets which I purchased this one. I can't find the original listing images but it was taken on a half-bust mannequin and it has characteristics of the Prop store jacket, mainly that half shaped hour glass by the waist, the cuffs (not completely squared but has a bit of a wave profile) and the single centred belt holder but it didn't come with a belt but funny how it has a bit of fabric on its shoulder, kind of resembles Markos squid lures.
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So in my jacket the logo is silver (I have 2 jackets of lesco leathers, the other is gold but it doesn't show as well here) and there are studs on the shoulders and cuffs to reinforce glued-in leather which seems to be horsehide as its quite thick, kind of feels like cardboard too. I thought that Silver Logos would be due to silver parts like the zippers and buttons and gold because of brass parts.
In the Propstore one (owned by Sean) it doesn't have zippers in the cuffs so it looks like they have been removed and have a central joint in the cuffs. It also has silver shoulder buttons but black pocket buttons so the theory of silver/gold logo is unknown. My jacket isn't 100% like the Propstore but with a few modifications, it could be extremely similar. It is also a Medium which I believe Billy is? The main zipper I find on these jackets are 'Serval' and its for heavy duty, on the Prostore is a YKK. I think it helps with the period of the jackets.
Here is another Lesco Leathers that got recently purchased (I don't own it) but it shows a belt that seems to be in 3 pieces.
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That's as far as I've got with Billys jackets, my next moves are to replicate it to the Propstore a little more closely and find a buckle that matches. Hope this has shed some light on the jackets.