...my Mk1 Nomad; I've swopped the bars since the photo was taken, and the tyres too.
Now that's a proper bike! I was about to add, "though, ergonomically, I'd like to see the grips rotated a bit towards the ground" when I saw you already swapped out the bars.
I live in Ireland, and most of my current bikes have adjustable stems. They neither creak nor rust. One that I'm particularly fond of is a Gazelle proprietary item, the Switch, which came on a Gazelle Toulouse; it's a one-inch quill fitment, with toolless adjustment by flipping up a lever, and it is beautifully smooth and silent. When riding into the wind, when it catches you in the chest when you'e sitting upright, you open the lever, rotate the stem to point downwards, and put your face down. Once, for my personal truck-assisted ton-up record, I put the bars waaay down, then rotated them so that grips pointed just a little off vertical, and achieved better than a flat back, a reverse rising back, much more aerodynamic. It added nothing to my speed of course, but it looked fast!
https://www.youtube.com/watch?v=LrFG-rOG8osThe other good, solid adjustable stem I have is the Humpert XtasY Swell which is very strong but lighter than it looks; it is a proper touring stem that will last forever but probably pricey (it came as OEM equipment on a top German baukasten bike).
http://www.humpert.com/en/bikeparts/marke/produktart/einsatzbereich/produkt/?marke=XtasY&produktart=14&einsatzbereich=34