An original 275 GTB block available for 175k$ on eBay.
The original engine block of 07485 is offered by Porsche Foreign Auto Wrecking of Los Angeles on eBay. The internal enigine # is 590/64. The seller points out that these parts have been stored for over 40 years! This would indicate, that 07485's engine was extracted in the late 1960s or early 1970s already.

07485 is a LHD, Shortnose example from 1965 with ass. sequence 180. Obviously sold new in Italy. The rest is currently a mistery.