Woah! A fantastic note though and I assume a true rarity in that condition. 

It will be interesting to see what that note goes for if it comes back up for auction in the near future. I'm a little surprised that it drew such spirited bidding at Sedwick's, not top of mind when it comes to banknotes for me. I guess it speaks to the strength, popularity and increased demand for Guatemalan notes and the market in general. 

With availability and prices realized for condition rarities I'm more than happy to pick up circulated notes for certain examples, it just doesn't make sense do anything else for most people.

Definitely a condition rarity, for any denomination from the bank, where all the notes I have a record of top out at low VF with most below that.

I don't think it is restricted to Guatemalan notes at all as it seems to be the case for anywhere in Latin America (and no doubt the rest of the world and even more so for British colonial notes ). Prices for earlier notes from Venezuela and Costa Rica are attracting very high prices, particularly quality examples, and the recent flurry of Panama notes at major auctions seems to have doubled or tripled the usual price range.

To be fair some of the examples do not appear very often at all, and coupled with impressive grades, I wouldn't be surprised if they are the sole surviving examples at this level. So for major collectors it is probably now or never to fill that gap in the collection!