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A Bugari Artiste Cassotto is a nice instrument with a good pedigree, however, this one looks well used falling in to some abuse judging by the dirt and stains, this doesn’t bode well for the important part, the insides if the outside bears signs of a hard life. Early to mid 60’s is my guess judging by the very old style mic plug-in.
The Kurikka looks in better condition outside, consequently is a lower quality accordion of a not well known brand as well as likely being older. True values of both can only be determined after examination of the insides.