You can shop eBay for vintage examples, but if you want the look without the wear and holes, you can get this 1970s rinsed denim jacket by Levi's Vintage.
This is an orange tab, indigo rinsed-denim jacket, constructed in the USA just as it would have been a 40 or so years back, complete with the collar size and cut of the day, along with buttoned chest pockets and hem tabs, plus a fairly slim profile.
Obviously not at a 1970s price, this one retails for £210.
Find out more at the Mr Porter website
Via His Knibs