Just try to guess from which year and manufacturer this grand piano sound might be.

Sounds a bit like an old Roland or possibly my old PSR-5700, hard to tell.

Cheers,

Gary

PSR-5700? That's an arranger from 1992!! 😵 So old? Certainly no compliment to the sample... Oh, I know what it is... you like the bright Yamaha piano sound more than the warm, wooden sound of a Bösendorfer or the likes. I'll wait for more guesses before I release it.

That old PSR-5700 had the best piano and vibes sounds Yamaha ever made. They were stellar to say the least, but discontinued when the lightweight systems came into being. The only person I know that still has one is Eddie Shoemaker (btweengigs). It was a beast, had a builtin 50-watt RMS amp, 6-inch speakers, and tipped the scales at somewhere around 55 pounds. When I had one stored in a semi-hard case it was like lifting a refrigerator. But damned it sounded good. Unfortunately, it was very limited in what it could do.

All the best,

Gary

Looks like an ancient flagship. At that time I had just bought a GEM WS2 and a Yamaha SX55, then replaced by a Roland JP-80.
So, as a hint, this piano is not as old as from the early 90s. It is already a stereo sampled piano (didn't exist in the early 90s, except maybe Kurzweil.)

Just a wild guess, i think its a steinway, sampled by Roland...
The concert Grand of the SRX-02 expansion board?

Thanks for your guess. Not too far away regarding release date (although the SRX-02 wasn't a Steinway, it has this very mellow, warm sound often criticized by those who want bright Steinway sound, it is said to be a Bösendorfer. SRX 11 is a Steinway).
I'll wait a few more hours before I release the result.

P.S.: Still regard the SRX 02 as one of my favourite Roland pianos, maybe no.1:
https://www.youtube.com/watch?v=w47GmjbW1so

So, nearly time to reveal it...

OK: This is the BEST ROLAND piano sample that existed from 1996 to 2000. It is the stereo piano from the SR-JV80-09 expansion board "Session" released in 1996, and it was presumably sampled from a Bösendorfer.
So for its first 4-5 years it was only available as an expansion. Even if there was an older expansion only dedicated to pianos, this piano on the session board was much more advanced, as it had separate left/right samples and two sample layers (piano and forte). The entire expansion had 16MB in 16bit format with many, many sounds, so the piano could have had nor more than 8MB max. In 2000, the heavily improved SRX 02 was released (64MB in 16bit format).
Now, "1996" sounds old, but this is an example of how the expansion boards were some years ahead of the preset sounds of the instruments: This same sample was used for the "European Grand" in many Roland synthesizers in the 2000s, it was the main piano of Juno G (released 2006!) and one of the three pianos in Juno Stage, SonicCell or GW 8 (2008-2013). So, in fact, Roland used this sample for about 17 years in total.

http://www.synthmania.com/sr-jv80-09.htm

http://lib.roland.co.jp/support/en/manuals/res/1810945/SR-JV80-09_je4.pdf