White ceramic 9900 with VERY unusual markings

[Qwerty]

Not long ago I got a bunch of white ceramic TMS9900 chips. One of them has unusual markings - ITT9900JL.

Does anybody know who manufactured the chip? There is no logo, but the markings only.
What do you think - how rare is the chip and how much it could be worth?

Just to be clear - the chip is not for sale or trade.
... and I don't have any spares.

[Robev]

Micronas Semiconductor

[gshv]

Micronas Semiconductor was established in 1989, and the chip has 1980 date code. Micronas Semiconductor acquired ITT Intermetall in 1997, maybe that company produced it.

BTW, I also have one in my collection:

http://www.cpu-world.com/CPUs/TMS9900/Unknown-ITT9900JL.html

Judging by the pictures, they just remarked TI's processor.

Gennadiy

[wepwawet]

I have one as well and all three have a polished lid. So I think Genna you are right. These had originally TI markings, these have bees cleaned with a hard rubber and then remarked.

[Qwerty]

Thanks a lot for information!