Just as I stated in my earlier post on the prices of a set of sterling flatware, I am not qualified to appraise silver, these are just prices I came across at one time (and are just a snapshot - I am sure they vary day to day, vendor to vendor), but they give you some idea of the retail value of these sets.
La Scalla by Gorham (1964) ($3,500) 64 pieces
Chantilly by Gorham (1895) ($3,600) 82 pieces
Acanthus by Georg Jenson (1917) ($8,900)
Broom Corn by Tiffany (1890) ($45,000)
Chrysanthemum by Tiffany (1880) ($25,000)
Flora by Shielber (1890) ($22,000)