https://flic.kr/p/p1i84w | Macintosh SE with clear display case | Not much is known about this. It appears to be a sales tool for the Macintosh SE. The only label on it states: CAUTION!!! Computer must NOT  be connected to power source while display case is installed, since EMI emissions may occur. This product is not FCC approved, and should only be used for display purposes ONLY.