Hey all, apologies for the Thread Necromancy, but I wanted to add some bits to it for posterity and for folks like myself that still run across it and can use the information here.
First, I want to add a link to the Propstore final Expanse auction for it's detail photos and some good info:
https://propstoreauction.com/auctions/info/id/412
Second, I won Lot # 224: The Expanse (2015-2022): Amos Burton's (Wes Chatham) Season 5 Jumpsuit with Earth Costume Components
https://propstoreauction.com/lot-details/index/catalog/412/lot/132084?url=/auctions/catalog/id/412?page=2&view=grid&catm=any&order=order_num&xclosed=no&featured=no&key=amos
If anyone has any questions I can answer about that lot, just ping me. I didn't see a label inside the coveralls which appear to be a cotton canvas, so I suspect that these were hand-made by the costume dept. Amos's grey Rocinante jacket from that same lot is tagged, and it's an Acrteryx Gamma MX Hoody Men's, size Large.
I also bought an MCRN small ammo can for "12mm Caseless" ammo from an eBay prop seller, detailed photos attached. It appears to be an older black Plano Field Box. Amazon has the current model here
Amazon.com although the latching is a little different. If you want the exact latch (with brass clip) is still sold as part of other Plano field boxes on Amazon and I can confirm that you can swap the parts. On the prop, the brass latch was removed and the lid has been super-glued in place.
Good to be here. I've never been a hardcore prop replicator before, but I've made my own sci-fi props here and there over the last 40 years, and I definitely put myself in the "Maker" category. Now I'm busy replicating the MCRN pistol (twice over) and other Expanse props as I still love the show. Thanks to all who posted great info here, some of it almost a decade ago now.