A match

 No, I'm not burning a project.  This is about two reds.

One that was used for a start and shown in Jan. 17 post, and the other that I used from the E and on, when I picked up that start again two days ago.  

Can you see a difference? 

 Since finishing the last tiny sampler and being too lazy to rid the area of remnants, dmc 347 was handy.  Hmm.  Looks exactly like the thread used in the non-routine alphabet project.  Stitch a few letters, perfect.  Obviously 347.

Nope.

That prior post claims 3831 is the red thread in that start.  Even under sunlight, no discernible difference in my skeins.  3831 is slightly brighter, more to orange than pink, but only when studied under certain lighting.  If I hadn't gone back to that Jan. post to see when originally started and set aside, never would have known.

So if you don't have both in stash, use the one that you do!  Since Janice mentioned 347 was difficult to find, if someone is having the same issue I would be glad to send a skein.  I have two to share.

This project is from Eliz Laidman, using one of the alphabets, narrowing width, and changing to red.  Stash is loaded with small red samplers.  Just find a section/alphabet you like, pick a red, change size to desired small.

Enjoy your day.