I found a keyboard upside down on a medium by a freeway in half. The keyboard turned out to be a “Samick Digital Piano SGP-101P” with 88 keys and a Fatar keybed. I tried reaching out to the company a few times (on instagram, by email, and websites) and found no results, they do have some information about some older products on the web, but this model seems to be older from the early to mid 90s. There are some inspection stickers in Korean on the internals and some resoldering has occurred, and a date from 1994 handwritten on some paper. I reached out to syntaur and they linked me this forum. I hope I can get some information, manuals, maybe even some history about the product.