With all the discussion about 6497-2s going on a while ago i decided to look at the options available
A, buy a 6497-2 well if you can find one they go for a premium as we have found out at about €345
B, Use a seagull well yes i agree that they are great movements but some people just want swiss
c, Convert a 6497-1 to a 6497-2 with all swiss parts
Option C is what i chose to do, change every part from the spring barrel to the escarpment for 6497-2 parts
201 B Minutenrad ohne Minutenrohr 920002016499
210 B Kleinbodenrad 920002106496
180 B Federhaus mit Federkern 920001806498
224 B Sekundenrad mit langem Zapfen unten 920002246496
705 B Ankerrad 920007056498
710 B Anker 920007106496
721 B Unruh mit Flachspirale 920007216496
Total over €150 not Including tax
Plus postage
On top of that you need to add the cost of a 6497-1, oh and there
(if you are going to change any of the wheels, including the escape wheel or spring barrel you need to change them all as the 6497-2 has finer teeth)
But when assembling i accidently refitted the low beat balance to the movement with all the 6497-2 parts and it ran great but at 18000bph
So what if you just fit the hibeat balence to a 6497-1??????
I dont know yet because i have not done it
Photos to follow later to back this all up