Scored this over the weekend. Belstaff Trialmaster, the 70's Belflex version. All correct though, slanted left pocket and pit vents etc. Perfect 38". $3. From my rural thrift store
that shall not be named. Same place I got
this many moons ago. Belted jackets not really my thing admittedly, but nice find. Interior may be
Dunloprufe, judging by identical jacket on ebay.
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"The synthetic materials sector is, however, by no means disregarded by Belstaff. In the 1970's, the famous XL500 jacket was created using a specially developed nylon textile known as Belflex. Belflex' qualities of wearability, resilience and durability are still unsurpassed today [loud as hell to walk in haha-ed.]. The XL500 is still the best seller; essential, hard-wearing, totally waterproof, and infinitely durable. Put to the test by thousands of motorcyclists throughout the world, it has all the essentials - but nothing superfluous - protecting the motorcyclist from the elements." -via Helston's History of Belstaff