The case is an Infinitiv 1200. As far as I know it was the only bespoke A1200 tower, all othe A1200 Towers are existing PC cases that were modified to fit the A1200.
https://bigbookofamigahardware.com/bboah/product.aspx?id=1341You can either post more photos or use can use the site linked above to identify what elese you have installed.
