Nice watch. I guess there is a Venus 170 inside.
I have only owned one Silvana, a few years ago, and do not know much about this brand. It had a nice dial and an ETA movement, maybe a 1080. I could not find any pic when searching today.
I guess Silvana was one if those "emboiteurs" casing Swiss made movements. All I know is there were based at Tramelan (Swiss Jura) and also sold watches to the US.
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