Is the package soft linen?

The filter is in its package when not use.

Who said vanadate phosphor is better efficient? Some reputable quote, please? Vanadium is notably toxic at the time yttrium and europium seems neutral.

YOX was somewhat problematic to coat the bulbs due to very fine grains, so vanadate phosphor was chosen for HPMs in the older times. I have some precious YOX powder to play, so know this first hand

There are rather clear rubbing marks. Where and how it is stored? Hadn't it fallen down on something? What are you using for cleaning?
I woulg guess it isn't that much what it is used for, but what is happening to it when not used...

I using it with my camera to capture closeup of the arcs of my MH lamps, and this exposes the filter to very high temperatures.
I don't scratch the filter.

Just saw this 2006 Ford Focus that was listed just this morning.

I'm expecting an EPIC Large Amount of money here soon in the next few days, possibly a week. Once that money is received, I will be able to begin
the search of the next car again, and I'll try my best to limit the amount for the car to just $3,000. The remaining amount of money will be used to
update my apartment significantly, and from there, my ability to SAVE UP money will also finally be back as well, since I'm cutting down a good portion
of my debt.
Yes, it really sucked that I had to let go of that beautiful sport car, and a lot of my dreams crashed and burned the moment it sold... but... now I'm
opening the door to more dreams. Obviously that is not the only epic Turboed sport car out there, at all. There are many, many more options. Since this
is the case, when the time is right, I will purchase another very similar sport car, just as long as I have my daily car as well.
The moment my daily car is in an accident, if I have a sport car, I will sell it, immediately. This is what I should have done when I lost my Pontiac G6.
But yep, once I get everything back on track, I will be in search for a motorcycle again, much before the search for the next sport car. Before the
motorcycle search begins, my apartment must be complete.
One thing I should mention about my apartment completion as well is that, I also plan on doing meet ups for us Lighting Enthusiasts/collectors here at
this apartment. Should be complete with all of this by the middle of next month, possibly earlier!

Sad to hear your Genesis is gone.

Have you found a daily car yet, or are you still searching?

@everyone - Are manufacturers known to have excess lamps leftover in their stock for years on end that are just waiting to be completed/shipped out? I’m starting to wonder if it’s possible that Philips had some of these lamps (possibly unetched) manufactured in the 90s or early 2000s lying around in 2010, so they just decided to etch them all real quick and sell them as a special order thing just to get rid of them. I  apologize if that theory sounds ridiculously far-fetched, but I really can’t think of another reason besides that, the mistake theory, and the foreign market theory, that these lamps would have ended up with that etch, date code, color, and being non-Alto. Unless Philips really was just making these under the hood in the late 2000s/early 2010 without so much as including them in a catalog. We may never know what the context is for this lamp.

I'm thinking either they were in a surplus store, in storage, or in Philips' storage and they wanted to get rid of them. I think most likely school storage since they leave tons of cases of lamps sitting around even though a few years ago a bunch of Polish Altos were left out next to a staircases for weeks until some people smashed them (during school hours.) I've seen F96T8s in a closet too but they don't relamp F96T8s anymore.

From what I've seen at school, I wouldn't even be that surprised seeing foreign market lamps!