When I was a kid in like the late 90s I went to a shop in chinatown and got a toy that I've never been able to find again. It looked a lot like this original gundam concept (on the left) by Kunio Okawara. It was black and had some red and metallic accents. I don't think it was from any series I have heard of, may not have been licensed at all. Definitely from the time period and style of this drawing though. Any idea on where to find a site with pictures of things like this?

Thanks for any help, it's been bothering me for years.