Thank you all so much for entering and guessing how long I might take. Most guesses ranged between 40 and 80 hours and there were well over 100 guesses. Here's the finished quilt which has now been delivered to my mum who loves it (phew).
It took me 65.5 hours and the winning answer was "65 hours, 27 minutes and 45 seconds" which was scarily accurate given that the guess was made back in May.
And a big fat thank you to Gwen from Celtic Fusion Fabrics who sponsored this giveaway for me when it first started and has a lovely fabric shop and blog and is soon to be getting in uber-cool Yuwa fabrics as shown in this blog post (one example is pictured below).