- 1st full appearance of Wolverine.
- A CGC 9.8 White Page copy sold at the Heritage Platinum Session Signature Auction (Sept 2020) for a staggering $49,200. This is almost $10,000 higher than other copy has ever sold for with the exception of the Mile High II copy.
- Excluding the Mile High II copy, the previous high was almost $10,000 lower at $39,000 set in 2018.
- The Mile High II copy sold on ComicLink in early 2019 for an all-time record of $59,000.
- Experts attribute the vast premiums placed on certain copies to big money collectors looking to obtain not just the best grades but the best presenting copies.
- The copy that sold at the Heritage Auction not only had white pages but had vibrant colors and was well centered. Two components that are of particular interest to collectors with this book
- High end collectors place a premium on the cover of Incredible Hulk #181 having very bright reds. Only copies that were printed at the beginning of the run for this book exhibit bright reds.
- As the run went on, the cheaper materials Marvel employed in this period wore. The plates blunted and the colors dried and shifted. Copies in the middle of the run exhibit muted reds and those at the end of the run exhibit an orange shade.
- Cover colors can also appear muted or shift shade if they have sun damage though it is unlikely the whites will remain white if this is the case.
- Few other books from this era bring in premiums for bright colors and none bring in the level of premium this book does.
- Advances in printing and inks largely prevent this level of color variation in modern comics.
- High end collectors also place a premium on well centered copies of this book. Though centering is an issue for many books from this era, the white back page advertisement here makes the smallest off-centering apparent.
- The copy that sold at the Heritage auction exhibited only slight off-centering and no off-centering was apparent from the from cover.
- The Mile High II copy excelled in all regards featuring white pages, near perfect centering and incredibly bright colors with lush reds.
- That copy was part of the Mile High II warehouse find in which hundreds of copies of Hulk #181 were found. Most had never been handled after being delivered and many were still in their original packaging.
- One of the key figures in helping catalogue that Mile High II collection was gifted his choice of a copy of Incredible Hulk #181 by the collections owner. What became the the Mile High II copy was his determination of the nicest copy from the hundreds of never circulated copies in the collection.
- Though not present on either the Heritage or the Mile High II copies, newsstand cover date stamps also command a premium on this book.
- These are on-sale dates stamped onto covers by newsstand vendors. When placed correctly they enhance a book's look like a signature does but they also give collectors a window into the actual street dates.
- For instance, copies of Incredible Hulk #181 have been known to be stamped "July 31 1974" rather than the 11/74 date printed in the indicia as publisher routinely printed indicia dates that were several months away to try and give books a longer shelf like on newsstands.