I have a data book with full data on a lot of Siemens tubes. However, scanning it would be too much hassle. However, if someone has a Siemens tube they want data on, let me know the type number and I'll scan that tube if I have it. The following are listed in the book

Triodes

• RS 870
• RS 876
• RS 1043CV
• RS 1081V
• RS 1828
• RS 2001K
• RS 2011K
• RS 2015CL
• RS 2021V
• RS 2031V
• RS 2041V
• RS 2051V

Tetrodes

• RS 1034L
• RS 1034SK
• RS 1036L
• RS 1054L
• RS 1054SK
• RS 1082CL
• RS 1082CV
• RS 1084CJ

and lots more tetrodes, including the YL series. Ask me.