Sometimes the older memories remain but recent ones cannot be recalled. Hope you find something out.
Very easy to write 0 and 1 similarly so my bet would be on a transcribing error somewhere along the way. The old log books were hand written. When these were entered into the 'computer' errors did occur as I found out myself. As the current owner you can request photocopies of all previous registration information on your car from the DVLA so when you get your new log book back, write and ask them for this. You should see a copy of the original log book which may reveal why the numbers for date of reg appear to contradict the dates of build.
Bulkhead number is very clear and according to 'the book' there was a timing cover modification at engine number 453032 which is dated June 1960 which is quite close to your engine number. There may be some ambiguity with exact numbers and occasionally anomalies which appear to contradict the data do appear. After all this was BMC not Rolls Royce so sometimes cars were made with what was available rather than what should have been fitted. Trim items and colours are sometimes examples of this.
Of course, it could just be that, for some reason, the car just sat around at a dealers and was not registered until much later. Maybe a potential purchaser wanted the car, paid a deposit then died and the car couldn't be sold until the estate was wound up. Maybe someone wanted the car, put a deposit on it then was posted abroad? Who knows? The date of build is the important date for originality rebuilds so I would assume it's a June 1960 ish car and wait to have the exact details confirmed by the Heritage certificate when it arrives.
Original Morris Minor is the book by the MMOC Club secretary Ray Newell. You can get it from the MMOC itself via the club website (click the link in my earlier post and it's listed there) or Amazon or E-bay. Good luck with the search
