I get that if one wants a totally original vintage in all its parts, also the zip needs to fit the bill. But at some point there was a suggestion to use a RiRi #8 or Talon #10 which aren’t period accurate either for ton’s jacket and it isn’t clear to me what is the advantage they offer over a YKK similarly styled. Anyway, nice problems to have!
Bingo! I’ve got the #10 Talon on my Bates. I’d be happy to use this zip too but in my experience they are exceedingly difficult to find.I get that if one wants a totally original vintage in all its parts, also the zip needs to fit the bill. But at some point there was a suggestion to use a RiRi #8 or Talon #10 which aren’t period accurate either for ton’s jacket and it isn’t clear to me what is the advantage they offer over a YKK similarly styled. Anyway, nice problems to have!
that and "the metal injection series" looks like smaller crown, but I don't see these on local supplier, I don't know if you can buy any of these in small orderYKK looks great to me.
YKK looks great to me.
I love this jacket...no belt, antique brass. A version of this Aero D pocket will likely be my next jacket too, but in tumbled black cxl. What are your different details?
LOL. I have the first one in my watch list! The two way is a non starter as the jacket is short.
Love that lining, awsome jacket
I have a pile of original 70s YKK that was made in the US, very study and high quality zipper in my opinion and I’d not be hesitant to use them on commercial jackets
John Lofgren Monkey Boots Shinki Horsebuttt - $1,136 The classic monkey boot silhouette in an incredibly rich Shinki russet horse leather. 
Grant Stone Diesel Boot Dark Olive Chromexcel - $395 Goodyear welted, Horween Chromexcel, classic good looks. 
Schott 568 Vandals Jacket - $1,250 The classic Perfecto motorcycle jacket, in a very special limited-edition Schott double rider style. ) CANNOT have a YKK on it. And trust me, it realllllllly should NOT have a #10 on it. In my experience with Vintage jackets, trying to replace the zipper and go up a size can really mess up the look of the jacket. The wider track of a #10 vs a #5 can create problems both with the overlapping track flap, AND with the look of the jacket by making it more of an exposed track MOTO jacket than the jacket it was designed to be back in the day and sold in the catalogs.
I bought a couple from this seller to have on hand. This is a cheap and easy option for a Talon. NOS from a seamstress.
https://www.ebay.com/itm/Vintage-He...276125?hash=item263f363bdd:g:v4AAAOSwlHJeOZ0u
Too short a zipper is a problem. Too long is not. Shortening is simple. You can use Brown or Black Fabric Markers to dye the zipper tape a color that will look more original. #5s are easier to find (not to mention cheaper) and you'll have no issues with it fitting and working in the jacket as if original.
I hope I caught you in time brother!!!!!!!!!!!!!
I don’t see any difference between a Talon #10 or a YKK #10. If anything the Talon pull looks bigger. A lot bigger in fact. I have both in my closet. Jacket arrives tomorrow. I’ll have a look and see what cooks. No chance in Hell I’ll put a number 5 pocket zipper down the front. Just because it was done that way in the past, doesn’t make it right or useful (clearly b/c it’s shredded to bits). I hate those tiny little pulls. They are weak and prone to snap like chicken bones. I’m not new to this hobby. While I appreciate differing points of view I hold my own in the highest regard, especially with my own stuff.
You certainly have a lot of experience and this ain't your first rodeo. I would still reiterate--and this is not my opinion---rather more a factor to consider regarding the look and potential functionality of the jacket---that the upsizing from 5 to 10 could affect those two aspects. I think Dena or another leather expert with experience on these old jackets would be able to finesse it to make it come out alright. And perhaps the Herc will have no issues taking on the wider zipper track. Mine doesn't look super wide. 
Ditto!
