I looked on Merlins website to find out the ages of my Extra Fat and Oreas and nothing on there seemed to tally up to the numbers that were stamped on the bottom of the bb. :?
I emailed Steve Dunn at International sales for Merlin and he got back in touch with me telling the year and month that these frames were manufactured. Top bloke.
Well that would be a 1992 model according to their list, does that seem about right.
Mine is a 1993 and was confirmed from checking its serial number on their website