This is what I was told by a German expert on SME arms
"Dear Peter,
thanks for the pictures. The tonearm is not original at all. The counterweight and the antiskating weight are copies and not original. I service only tonearm in original condition. The original counterweights are as spares available, but expensive.
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Mit freundlichen Grüssen, Best regards, Met vriendelijke groet, Salutations distinguées, Distinti saluti, Med venlig hilsen
Robert Graetke
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Analog Tube Audio - finest quality handcrafted in Germany
I'm Peter, Denmark: AD Audio Satchmo 3 Line Stage + EAR 516 + Quad ESL 57 + EAR 324P + PTP6 Acoustand L75 + Poul Ladegaard tonearm/Denon 103D + Fidelity Research FR24 mk ii/Decca Maroon + Leak Stereofetic FM Tuner + B&O Beocord 6500 Cassette Deck + Synology DS 415+("upgraded" to 8gb memory) cabled to Win10 PC - JRiver - Paul Pang USB-splitter cable - Linear 5v psu - Nuforce U192s - Line Magnetic 502CA DAC