Don't have my ownership form in front of me, but if you do then just turn it over, there is a list of numbers/letters that are shown on the front & the explanation for these are on the back, ie. 1 - car registration, 2 - how many owners
You should be able to locate what you're looking for easy enough.
you either want B or I b is date of first reg and i is first reg in ireland if you haven't had an nct before or its out for more than about 6 months you have to ring them 1890412413
why don't you just ring them and make a booking. 1890200670
If your car is an import and it's the first time it's getting NCT'd you'll have to bring your Log book in to the test centre so they can photo copy it. Then you'll get a date.