[AdamsAveBikes]

I'm considering purchasing this set for my '79SC. I used the search and found this thread, so please excuse the hijack.
Please take a look at these photos and help me find out what make they are. The welds look like SSI, Magnet test reveals no attraction anywhere, yet there are no markings, stampings, or ID marks. Once I know what they are, I can make a valuation. Thanks!