The latest ring on the bass side dates from (+ or- 1) 1731, and the treble from 1733.
The 2 sides appear to be from the same tree, and I get better cross-matches with the treble side, which are definitely pointing to batches used in Italy.
The most significant cross-matches in my database are:
c.1725/30 Ventian or Bolognese ( not Pasta..), Guarneri filius Andreae, c.1733 Omobono Stradivari, 1740s Camilli, 1770s GB Guadagnini, 1733 Stradivari, 1751 GB Guadagnini, 1759 Deconet, 1736 Carlo Tononi, Guarneri del Gesu, 1753 Camilli, 1711 Joseph Filius Andreae,Tomaso Eberla, 1777 Deconet, 1738 Del Gesu, etc...
So a strong and specific Italian signal and a top made after about the very late 1730s.
Peter Ratcliff 2022