Thanks, Dean. As far as I know, that makes Stella #154 the earliest produced Amel 54 with 12mm lowers and 10mm Intermediates.
This is a summary of what I know as of today. I am sure the hull numbers will narrow with more reporting:
#46 (2007) was produced with 10mm lowers and 8mm intermediates. Had rig failure due to lower shroud failure-reported in Amel Yacht Owners Group in July 2014.
#117 (2009) was produced with 10mm lowers and 8mm intermediates. #128 (2009) was produced with 12mm lowers and 8mm Intermediates.
#128 (2009) was produced with 12mm lowers and 8mm Intermediates.
#154 (2010) was produced with 12mm lowers and 10mm Intermediates.
Best,
Bill Rouse Yacht School 720 Winnie St Galveston Island, TX 77550 +1(832) 380-4970