bagerap Posted March 22, 2012 Report Share Posted March 22, 2012 This portrait comes from a medallion/brooch: It is some form of early plastic but, if my suspicions are correct, too early for Bakelite. I thought it might be Prince Albert but would appreciate a wider point of view as I feel he has a Nordic look to him. As always your opinions are valued. Bob Quote Link to comment Share on other sites More sharing options...
neweden Posted March 22, 2012 Report Share Posted March 22, 2012 Too old looking I think for Prince Albert, as he died at a young age. Could be a German Nobel prize winner, do you think. Quote Link to comment Share on other sites More sharing options...
bagerap Posted March 22, 2012 Author Report Share Posted March 22, 2012 I've put this on three forums to get the widest possible exposure and so far the only suggestion is Kaiser Wllhelm I who died in 1888, and pictorially he's a good match. Which leaves the problem, what is the material? Cellulose maybe.. Quote Link to comment Share on other sites More sharing options...
thedeadpoint Posted March 22, 2012 Report Share Posted March 22, 2012 What's the density/weight? Quote Link to comment Share on other sites More sharing options...
constanius Posted March 23, 2012 Report Share Posted March 23, 2012 Try this link http://www.mernick.org.uk/victplas.htm#Celluloid for a good list of early plastic type materials. Quote Link to comment Share on other sites More sharing options...
Ian Posted March 23, 2012 Report Share Posted March 23, 2012 From (distant) memory of my school boy days,and chemistry lab work in organic chemistry, I would think the material is almost definitely caseine based ( `bakelite' by a different name). Ian Quote Link to comment Share on other sites More sharing options...
bagerap Posted March 23, 2012 Author Report Share Posted March 23, 2012 The other side, which shows a broken clasp mounting partially embedded in the medallion. I'm sure this says something significant about the manufacturing process, but I'm not sure exactly what. Except perhaps that the mixture must have been semi liquid when the clasp section was inserted. Weight 10 gr 44.5mm x 5.7mm Quote Link to comment Share on other sites More sharing options...
constanius Posted March 23, 2012 Report Share Posted March 23, 2012 Parkesine perhaps, see link. http://www.scienceandsociety.co.uk/results.asp?image=10276808&itemw=4&itemf=0001&itemstep=1&itemx=11 Quote Link to comment Share on other sites More sharing options...
bagerap Posted March 26, 2012 Author Report Share Posted March 26, 2012 Thanks for two fascinating links Pat. Quote Link to comment Share on other sites More sharing options...
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