GB copper brass two handled urn

[colbook2014]

Hi, I am wondering if anyone can shed any light on this urn. It appears to be handmade with copper bottom. I am not sure if it is copper with brass coming from round part at bottom. Has GB with H underneath to base.

Looks hand hammered to base. Engraved and applied metal work for decoration.

Wondering where its value might lie, and also how would I clean it.

thanks for any input.

Have more photos but post only seems to take one. Will put makers mark in a comment.

[twyngwyn]

http://www.oldcopper.org/special_topics/german_copper_brass.php

[colbook2014]

Thanks very much twyngwyn. Gebruder Bimg, vase, probably before art noveau? I am guessing  circa 1910. Do you think it is brass and copper?

these 'vases' seem quite valuable. Would around $50 be selling myself short? It has dings and the oxidisation ... Any suggestions for cleaning?

[twyngwyn]

could it be an ice bucket? how big is it? you could start an auction in 'collectables' with a starting price for whatever you're willing to part with it...

how to test & clean copper: http://www.howtocleanthings.com/surfaces/how-to-clean-copper/