HI, This is right, but note that the RFT Bulletin tells "+, -, ~". Especially at the LL- and LC-tubes there were different symbols and also pinouts with the same type number.
This is all I know at the moment: Type Sort Brand(s) Base Displayed symbols LC-1 NIX-E PIE B13B 0-9 LC-2 NIX-E Unitra Dolam (Poland) B13B numerals LC-7 NIX-S Unitra Dolam (Poland) B13D 0-9, PL, PR LC-511 NIX-E Unitra Dolam (Poland) B13B 0-9, dot (middle left) LC-511F NIX-E B13B numerals LC-513 NIX-E Unitra Dolam (Poland) B13B 0-9, PL LC-513A NIX-E Unitra Dolam (Poland) B13B 0-9 LC-516 NIX-E Unitra Dolam (Poland) U11 0-9 LC-531 NIX-S Unitra Dolam (Poland) B13D 0-9, PL, PR LC-531F NIX-S Unitra Dolam (Poland) B13D 0-9, PL, PR LC-541 NIX-S B9A 0-9 LC-541F NIX-S B9A 0-9 LC-631 (Version 01) NIX-S Unitra Dolam (Poland) B13B 0-9 LC-631 (Version 02) NIX-S Unitra Dolam (Poland) B13B 0-9 LC-631F NIX-S Unitra Dolam (Poland) B13B 0-9 LL-1 NIX-E B13B symbols LL-551 NIX-E Unitra Dolam (Poland) B13B A, V, Ω, +, -, ~, % LL-551F NIX-E Unitra Dolam (Poland) B13B A, V, Ω, +, -, ~, % LL-552 NIX-E Unitra Dolam (Poland) B13B m, M, p, μ, k, n LL-553 NIX-E Unitra Dolam (Poland) B13B F, H, Hz, S, W, z LL-555 NIX-E Unitra Dolam (Poland) B13B Ł, C, T, R, Y, N, B LL-556 NIX-E Unitra Dolam (Poland) B13B G, M, P, S, U, Δ LL-557 NIX-E Unitra Dolam (Poland) B13B E, J, A, V, F, H LL-558 NIX-E Unitra Dolam (Poland) B13B D, L, K, W, X, Z, φ LL-558B NIX-E Unitra Dolam (Poland) B13B symbols LL-561 NIX-S(I) Unitra Dolam (Poland) B13D +, -, Δ or +, -, ~ LL-661 NIX-E Unitra Dolam (Poland) B13B +, -, ~ LL-661F NIX-E B13B +, -, ~ Additions welcome. Pictures welcome. Datasheets welcome. All data missing in the chart very welcome. Offers for all welcome, too! Best regards Dieter ----- Original Message ----- From: Tyler Bourne To: neonixie-l Sent: Monday, January 20, 2020 8:24 PM Subject: [neonixie-l] Re: Master list of oddball symbols? There is the Dolam LL-561, with +, -, and a triangle. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/B92C062D805346FDACEA349E1D435345%40workstation.