From early 2005? This is a later PC-60. By this point Lian Li had decided to put a sticker on the back with the number, but it doesn't tell the whole story. I'm pretty sure this is known as a PC-60 USB B2, going by a listing on Newegg and a forum post. The motherboard tray now has a pushed out fan grill but still uses square standoffs, and the fan controller is now exposed through the front panel. There's also a top fan mount, and all fans use plastic push pins.
https://web.archive.org/web/20050316191035mp_/http://www.lian-li.com/Product/Chassis/M_C_PC-6X_S_PC-60.htm
https://arstechnica.com/civis/threads/lian-li-pc60a-vs-pc60usb-b2.385848/https://www.newegg.com/p/N82E16811112022