How Many Robert Indianas Are Lost Per Year?

This is Robert Indiana's screenprint "Autumn", from the "Four Seasons of Hope (Gold)" portfolio. Executed in 2012, it was produced in an edition of 82. There were also some printer's proofs and hors commerce proofs set aside, so let's say that a total 100 of these prints were created.

Robert Indiana is a prominent artist and he has an active secondary market. A copy of this piece, for instance, is up for auction next week with an estimate of $3,000 - $5,000. That's far from jaw-dropping by art world standards, but it's definitely something worth keeping around if it's in your house.

So here's my question: of the circa 100 copies of this print that were created, how many do we think are "lost" per year? Or put differently, how many copies of this print still are, functionally speaking, "in existence" in the art world?

By lost, I mean to include things like:

• The work being damaged beyond reasonable repair.
• The work being thrown away or otherwise disposed of.
• The work being in a location where it is forgotten about, or its owner not knowing what it is, such that it is unlikely that it would ever reemerge into the art world.

The last category does not include circumstances where the work is in someone's private collection and have no interest in selling it (but they know what they have), but does include situations where someone just puts it in a box in their garage and forgets about it because they don't realize it is a prominent work by a prominent artist.

Presumably, all editioned art (or all art by a given artist, if we consider their entire career production as a whole) has an attrition rate. Once the edition is produced (or the artist dies), no more is created. Meanwhile, as life goes on and entropy takes its course, work progressively gets lost. Pieces in museum collections are, relatively speaking, safe from becoming "lost". But pieces in private hands are a different story -- it gets gifted to someone who doesn't realize the work is important, or someone dies and the print is tossed while the house is being cleaned up, or it is ruined a natural disaster. Stuff happens, in short, and so practically speaking that 100 figure is going to progressively tick down as time passes.

But I'm curious what people think the rate is. When one sees an editioned work by a prominent artist, how many of those works have disappeared?

Maybe 2012 is too recent for much of this particular edition to have been lost. Robert Indiana was very well-established by then; one would imagine most people who obtained his work would be people who knew what they were getting. The proportion of "lost" pieces for earlier works may be higher -- in part simply because of the passage of time, but in part because earlier in his career his work was more likely to end up in the hands of people who didn't really think of it as an artifact to be preserved.

My parents have a couple of great limited edition prints by some of the most famous artists from the mid-20th century, and last year I did a little project where I tried to "account for" as many copies of those pieces as possible -- looking at auction records, museum collections, gallery inventories, and so on. Even for the most prominent work with the smallest edition size (28 with 7 asides), I was only able to find info on less than half; for most of the works the number was far less. That doesn't mean those unaccounted for prints are "lost" as I defined it above -- I suspect many are in private hands with owners who know full well what they are* -- but it was still interesting to witness how much of even the most famous artwork in the world is, in practical terms, missing.

Anyway, no deep thought here, just a musing of the day.

* For example, my research would not have revealed anything about my parents' ownership of these prints, but for the fact that I obviously knew what they had.