SLASHOVERALLS Slash Overalls S06XX 506XX

Currently, this is said to be the most difficult item to obtain in Japan:

SLASHOVERALLS Slash Overalls S06XX
Size: 38 (Please refer to the actual measurements as the size marking is faded)
The tailor doesn't often release information, so I will only provide the length and width.
Length: 54.5 cm
Width: 50 cm

This jacket is made using multiple sewing machines, such as vintage Singers. Therefore, the stitch pitch and the thickness of the cotton thread vary.
The dyeing of the cotton thread is meticulously done, and even when compared to my own 1930-1950s Levi's original 506XX, the level of reproduction is extremely high, and the silhouette when worn is almost identical (as the patterns vary depending on the factory and size of the 506, it's not the same for all pieces).
The level of reproduction is outstanding compared to other brands.
The buttons on the back are still the two-prong type, but I think this is much better than the increasingly common two-prong style.
The fabric is from a well-regarded source, so the fading is very faithful, without being overly assertive or artificial.
The buttons and buckles are, of course, made of iron.
There is some fraying of the stitching and color transfer on the leather patch (this is common for pieces from this era).

I've finished examining it and I won't be wearing it anymore, so I'm putting it up for sale.
I'm still hesitant to sell it because it's such a valuable item, but my denim jacket collection keeps growing, so I need to organize a bit, and I'm listing it with some reluctance.

Please be sure to check the profile description before commenting or purchasing.
I will not respond to generic messages.
I have various other items for sale, so please take a look.
Thank you.

501XX, vintage clothing, Shimokitazawa, short length, cropped length, short length, red ear, leather patch, cinch back, Levi's, Lee Riders, Wrangler, 506XX, S506XX, 507XX, 557XX, vintage, wartime model, early, late, 66, 40s, 50s, 60s, Ron Herman, Levi's, Lee, cowboy, WAREHOUSE, old Denime, 1st, 2nd, 3rd, denim jacket, trucker, RESOLUTE, The Real McCoys, SAMURAI, Momotaro, Sugar Cane, Buzz Ricksons, EVISU