Not really a lot I could tell you about it. It is an industrial VE pump but only Bosch could tell you any detail specs. The breakdown diagram I found indicates it has a solenoid KSB unit which probably means it had some EPA certification. Here's the link to that diagram. 0 460 424 144, Fuel distributor injection pump BOSCH VE series, 0460424144 If you went to buy one in the US they are super expensive. $5000 list and usually selling around $3500. You can get them out of China for around $500. LOL.
The fact that you found the Ford part # would indicate it was used in a factory built vehicle. The E350 vans from the early days were modified after they were built so their pump didn't have a Ford number here in the US. A good guess would be Europe or South America. They still build trucks in Brazil with the 4bt but not ones using that injection pump. For fun, you might take that Ford part # down to the local dealer and see if they can tell you what vehicle it came on.
That sounds totally possible. Ford sold out the Cargo van series to Iveco in 1991 but it still went by the Ford name. Those trucks were sold in Europe and Brazil which also fits the ticket. That chassis platform may also have been used in some buses.