On-sale date from Amazing Heroes #33, with shipping date of 1983-10-04.
This issue is a variant of The Thing (Marvel, 1983 series) #8 [Direct].
There exist further variants:
Letters from readers: Rita Jacobi, John Marinelli, Howie Kimbradle, Ronald J. K. Hammerlong, Robert (no relation) Byrnes. Also includes a cartoon of ex-Thing Editor Ann Nocenti saying farewell to the Thing comic.