This keyboard a tai hao APCY, which is one of the many clones of Alps white. This keyboard has been tested and working the condition it comes in is listed as new because it was stored and never used since the 1990s

The switch resistance is heavy I believe to be maybe 80 or 90 g ?

Please message me and I’ll get a video sent over showing a typing test it’s a pretty unique board and has a clicky and slight thock sound under a heavier actuation