My grandmother dealt antiques and told us this had value but she died before we got the name recorded. Any help?

[img size=150]http://sphotos-b.xx.fbcdn.net/hphotos-ash3/530070_10151118479665783_2085277468_n.jpg [/img]

[img size=150]http://sphotos-a.xx.fbcdn.net/hphotos-ash4/306330_10151118482545783_1971615612_n.jpg[/img]

The bottom has only the light impression of 283 or 233.