I’ve had a similar experience. Maybe a year ago I was told that the letterwood pieces would be running out sooner rather than later. I passed at the time, but the thought kinda hung out in the back of my mind.
When it comes down to it for me, I need in my collection a pg vintage Alhambra necklace and I don’t want the plain pink gold. I could SO, but quite honestly, it should be a neutral and the only SO that makes sense would be gmop. Visually, letterwood is really not so much different to me than the gmop, and very close to onyx when it darkens, so financially and in terms of my planned collection it just makes the most sense.