Ed,
I have a feeling those are not expensive/premium chisels. At first, the long ones reminded me of the Harbor Freight HSS chisels I bought ~15 years ago, currently selling as a set of 8 for ~$80, but don't think they are those as the handles are different and don't see good markings on the clean tools; IMHO, they are decent tools, the metal is a bit harder than the early 80s SS set. I zoomed way in and believe I see "HSS" on the 3rd and maybe the 7th long tools, but both markings appear to be off center and low quality, maybe done by hand with a sharpie.
Looking around at better brands with dark handles, I'd expect to see one or more attributes of handle decoration and/or marking, crisp blade marking, and/or thick ferrules. Also, looking at the blades near the handles, these have abrupt transitions whereas better quality seem to have smooth transitions, such as this Henry Taylor set:
https://www.leevalley.com/en-us/shop/tools/hand-tools/turning-tools/20265-high-speed-steel-pro-turning-set?item=58B1901.
I can't find any lathe chisels with the sort of ferrules that cover then end as is on the short tools.
My guess is that these are inexpensive chineseum tools, that new today would be in $5-15 range each, and may even be made from decent HSS. Based on that assumption and used, if I needed several of those, I would probably not want to pay more than $50-75 for all of them.
