So i went back to the thrift shop and got the TL-Mini Osram 13w 630 "Furniture White".

Again, it seems like a mixture between some of the triphosphor phosphors (the teal and the orange-red-deep red) and a bog standard halophosphate mixture. I still am wondering why they would do such things. The 630 color nomenclature suggests a bad CRI. But why bother mixing in the expensive phosphors if it's gonna be meh anyway?
Either way, it looks very similar to the Crompton "Halophopsphate" tubes spectrum wise that i wrote about earlier. I need to try out different software - one that makes it more obvious when things clip.

The color seems quite alright by the way.

Coincidentally, i found another 'Furniture White' lamp in the recycling bin at the hardware store. Didn't take it with me - simply no space. But it's extremely rare, that's for sure.

Thanks for indulging some hoarding and publishing a spectrum of this Filling the gaps in a classic rare earth spectrum likely makes color perception better, even if if overall CRI score the lamp gets is mediocre. Also, may look like an upgrade for home users habituated to '530 color. And by using half-halo mix Osram probably saved a little bit of cost, for a very price sensitive end-user home market, where even 0.5EUR for a luminaire matters.

The Americans have tubes with triphosphors and halophospate blends, and produces 70% CRI.

I need to figure out what the efficiency of the lamp is. Because one reason for the deprecation of halophopshate lamps, was the lower efficiency than triphosphor. I'm thinking that this may be a way to scoot the halophosphate just past the efficiency regulations.
But since it's a rare lamp, it's not easy to find such data. Nor do i know the power and efficiency thresholds of the early 2000s regulations on fluorescent lamp efficiency.