Thanks for the insightful response @Canuck Panda !Cordva_no is also where I found out about High Notch Mfg brand. He has very curated nice collection of jackets. Cream of the crop.
I rate very highly of my High Notch jacket. It is on par with the other brands he carries in his store, FW, TM, Cushman. However, I read through his web page in translation again and it doesn't seem like he is making jackets now, just repairs. I could be wrong.
Since High Notch Mfg brand doesn't have much marketing exposure, their used prices are very low, but quality is very high.
There is an used basic half belt on Mecari now for ¥40,000. IMO it's a banging deal for the quality.
It is indeed a great deal if they are about as good as those heavy hitters you mentioned!
I am more interested in their "Catoosa" model which I've seen pop up in Grailed for about 480€, which is fine by me. I'll probably pull the trigger tonight as I'm still discussing things with the seller.
But I'll be sure to keep my eyes open for more of this brand size 38 on Mercari!
I just love the multi panel back and the steep diagonal chest pocket with looped ball and chain, adding a touch of freshness to what I feel is a more old-school traditional design.