It’s a cheap mechanical keyboard with some black and gold key caps I got off of eBay.
Another option is that there are a few “ready made” keyboards on Amazon. Just search for “typewriter keyboard”
Here is a black and gold one (not my exact one) that’s currently for sale. Azio MK-RETRO-03 USB Typewriter Inspired Mechanical Keyboard (Blue Switch), Black and Gold Edition https://www.amazon.com/dp/B072ZKXL8F/ref=cm_sw_r_cp_api_cv8sBb6EMX4CR