If any French numismatists here want to discuss with me any questions of Frances most important historical CCCs. The 18thC French Ecu's. ASK YOUR QUESTIONS! You like/ no like/ more information/concerns its modern?/modern replicas to historical CCCs? PROPER PRICING? Which ones are rare, not so rare/ desirable/generically common.
World Coin #35: France. JPL World Coin #35: France. 1782 CCC Ecu. Copper like patina. 40.61 mm, 21.8 grams. VF or so. XRF (see photos and previous comment about why Hg is detected but no Ag is detected in the XRF assay). When I started to detect "some" similar XRF results (Hg present/Ag absent) this led me to the fact that a brass or bronze alloy "DOES NOT" retain mercuric silvering as well as high copper alloy. In this case we see Zn & Sn >1% so IMO we can call this a brass/bronze alloy. When metals are <1% we can with some confidence consider these metals as trace ore impurities as most researchers have followed this type of generic alloy classifications in Academia papers. Incredibly crude edge lettering. Ex. Thetis Numismatics.40.61 mm, 21.8 grams. VF or so. XRF (see photos and previous comment about why Hg is detected but no Ag is detected in the XRF assay). When I started to detect "some" similar XRF results (Hg present/Ag absent) this led me to the fact that a brass or bronze alloy "DOES NOT" retain mercuric silvering as well as high copper alloy. In this case we see Zn & Sn >1% so IMO we can call this a brass/bronze alloy. When metals are <1% we can with some confidence consider these metals as trace ore impurities as most researchers have followed this type of generic alloy classifications in Academia papers. Incredibly crude edge lettering. Ex. Thetis Numismatics.