black,white & red winter scene

Keystone ride em steam shovel Patent number 1566.030

4-piece wicker set: 2 chairs, Loveseat, and ottoman with swan carvings on arms

Just wondering roughly how much this silver set was worth?

6 Forks and 6 Knives Silver
Markings Rosenthal studio-linie Germany
On the knives is etched 90-18
On the forks is etched 90-27

My Dad bought these on Oklahoma at a china factory. I actually hate them but I'm curious what he paid. Apparently there were expensive. I think the FC stands for fine china, it's made in China so I'm sure it's not as great quality but I could be wrong. Any help would be nice. Also I did not include the bowls in picture. Someone helped me with finding them on Replacements.com... here is the link but no prices!

I got this as a gift. The lady I got it from was an antique dealer and she said it is worth at auction, $900. If it is worth that much my husband wants to add to our property insurance. Thanks so much for your help!