PAB00730 was built on 29/05/2003, obviously not sold until the following year if it was not invoiced to a customer until 2004. Not unusual for small machines that often go from the factory into dealer stock waiting for someone to come in off the street and buy them.
For the 174 hour difference between the two readings TBH I wouldn't bother. Initially I thought your posted 200 hours difference between the readings was a misprint for 2000.
With the machines I normally work on, 4450 hours would be normal for a machine about 9 months old, not 11 years ..........