Trioplan 100/2.8 Substitute?

yes, same maker: orestor 135mm - not as strong soap-bubble bokeh effect
http://vintage-camera-lenses.com/meyer-optik-gorlitz-orestor-2-8-135/

read on this link bellow:
http://www.4photos.de/test/Soap-Bubble-Bokeh-Lenses.html
 
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