Hey J, post a pic of it so we can see it too. Is it heavier of finer. Hold it up next to your regular thread if there is no info in the cone and see if it is very different in size.
How about this:
http://www.manta.com/c/mr4zm5w/needle-and-threads
Maybe not the right site. sorry.
When I googled Delray Thread Company,most of what came up was Delray Sheets (600 count) and the above site. Not much help.
This might sound wierd but could Delray be a color name rather than a brand?
Is there any other info on the cone?
peace