Let's assume it is here and our scope are standard with electronic observing gadgets. So if you were to keep JUST ONE of your personal eyepieces on display as novel artifacts of a time gone by, what would they be?
Me...If I hadn't sold it it would have been my 1st premium eyepiece that I purchased when they 1st hit the market in the 80's, the nice compact powerful newcomer, the 4.8mm Nagler Smoothside. Mostly not because of it's performance, but because of my history with it and the industry's.
Otherwise, from, my current inventory I'd keep the 24mm TV Wide Field for the same reasons as I got it with the 4.8 I let go.