It happens to be a Colt 1911. That's all he told us about it. Here's one of the testing prototypes. All the 1911s and most of the semi-auto pistols that came after this owe something to Browning's design.
But only one of them belongs to Archer's Grandfather.
There's a concept I learned about in Aikido, called Wabi, or more correctly, Wabi-Sabi. It is the idea that a thing can have a rightness to it, in it's place. Like an old barn on a hillside, a small white church with a steeple that you see on a country road, or perhaps an old gun, well used, with a history to it.
Wabi now connotes rustic simplicity, freshness or quietness, and can be applied to both natural and human-made objects, or understated elegance. It can also refer to quirks and anomalies arising from the process of construction, which add uniqueness and elegance to the object. Sabi is beauty or serenity that comes with age, when the life of the object and its impermanence are evidenced in its patina and wear, or in any visible repairs.
From an engineering or design point of view, wabi may be interpreted as the imperfect quality of any object, due to inevitable limitations in design and construction/manufacture especially with respect to unpredictable or changing usage conditions; then sabi could be interpreted as the aspect of imperfect reliability, or limited mortality of any object, hence the phonological and etymological connection with the Japanese word sabi, to rust.
(bolded text for emphasis)I know this term, think I understand it and I would absolutely apply it to the Archer's grail gun.
Because I know what it means to him. I have my Granddad's Browning designed pistol. The one he carried every time he went hunting, worn and well-used. It is not a 1911. It's a Colt Woodsman, one of many thousands made and yet there is only one. He's been gone for a lot of years now, but I remember him every time I take his pistol to the range.
This grail gun is both priceless and attainable. It will not depend on money, it is just time and chance.