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Some help to identify antique world map
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<p>[QUOTE="all_fakes, post: 173222, member: 55"]I'd guess that the top layer is actually copper rather than brass. I'd guess the middle layer is hardened pitch (resin). From the 1960s to the present one could get kits to do a similar sort of work; these kits had a very thin sheet of copper which one would press into a plastic mold to make arty pieces.</p><p>Older versions, like in the 1920s, would have had a thin sheet of copper which would be pressed into a wood or metal mold; then melted resin (not fiberglass resin, but melted pine-pitch) would be poured into it to strengthen it. </p><p>This is partly guess-work, but I'm pretty sure the middle layer will not be petrified honey, and the color of the top suggests copper rather than brass.</p><p>Photos of the wood backing might help to get a date; the patina or lack of it should reveal something about age.[/QUOTE]</p><p><br /></p>
[QUOTE="all_fakes, post: 173222, member: 55"]I'd guess that the top layer is actually copper rather than brass. I'd guess the middle layer is hardened pitch (resin). From the 1960s to the present one could get kits to do a similar sort of work; these kits had a very thin sheet of copper which one would press into a plastic mold to make arty pieces. Older versions, like in the 1920s, would have had a thin sheet of copper which would be pressed into a wood or metal mold; then melted resin (not fiberglass resin, but melted pine-pitch) would be poured into it to strengthen it. This is partly guess-work, but I'm pretty sure the middle layer will not be petrified honey, and the color of the top suggests copper rather than brass. Photos of the wood backing might help to get a date; the patina or lack of it should reveal something about age.[/QUOTE]
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