Might be useful....

https://support.discogs.com/hc/en-us/articles/360001568133#format

SID codes http://wiki.redump.org/index.php?title=List_of_SID_codes

B#nnnnnn-yy (e.g. BC781001-01) - (only for releases since 01 October 2011)
Pressed By - Optimal Media GmbH

-xU-m-n (e.g. -1U-1-7) (only valid for UK pressings since July 1973)
Add a company: Pressed By - EMI Records

(remove first space!!)
Guidelines Link [ g1.2.3]
Release Link [ r15703]
Release Link (title only) [ r=15703]
URL [ url=http://www.discogs.com]Discogs[/url]
User Link [ u=teo]

Notes :
™ ℠ ℗ © ©℗ ℗© ℗&© ℗+© ® • ●

<sup>os</sup>
℗ © —— © ℗ —— ℗ & © —— © & ℗ —— ℗ + © —— © + ℗ —— ® • ·
⓪①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳
⓫⓬⓭⓮⓯⓰⓱⓲⓳⓴
½ ⅓ ⅔ ¼ ¾ —— ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ⁰ ¹ ² ³ ⁴ ⁵ ⁶ ⁷ ⁸ ⁹

ⒶⒷⒸⒹⒺⒻⒼⒽⒾⒿⓀⓁⓂⓃⓄⓅⓆⓇⓈⓉⓊⓋⓌⓍⓎⓏ
ⓐⓑⓒⓓⓔⓕⓖⓗⓘⓙⓚⓛⓜⓝⓞⓟⓠⓡⓢⓣⓤⓥⓦⓧⓨⓩ
Æ æ ǣ Ãã Ââ Āā Ăă Ąą Ää Åå Àà Áá ß Çç Čč Ćć Ðð Ď Ěě Ĕĕ Êê Ēē Ëë Ęę Èè Éé
Ģģ Ìì Íí Îî Ïï Īī Įį Ķķ Ĺĺ Ļļ Łł Ññ Ņņ Ňň Ôô Õõ Øø Ōō Œœ Öö Òò Óó ð Ŗŗ Řř
Şş Šš Ƨƨ ṡ Ţţ Ùù Úú Ûû Üü Űű Ųų Ṿṿ ṽ ẘ ẍ ẋ Ý Ỳ ÿ ỹ Żż Žž ẑ ẕ
ä à ò ó ß ù ú ü À É È Ê Î Ø Ô Ö Ü Û ñ Œ œ æ Æ Ç

☹ ☺☻ ⦿ ℗ © ® ™ — iƒpi « » ——

☂ ⁂ ☃ ☼ ☆ ♪ ♫ ▷ △ ◁ ∇ ◊ ∆ Λ · € £ $ ¿ ¡ µ
¢ § ° º × → ↓ ¦ | ± ‒ – № ≠ ٭ ✳ ✶ ♠ ♣ ♥ ♦ ♪ ♫ • ¼ ¾ ½ ⅓
ä à á â í ö ò ó ô ß ù ú ü ™ · • ♠ ♣ ♥ ♦ ♪ ♫ À É È Ê Î Ø Ô Ö Ü Û ñ Œ œ
æ Æ Ç ¿ ∇ Ʈ
Aı Bı
Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ

♪ ♫ ♬ Ω ℧ Δ △ ∆ ∇ ◇ ◊ ◣ ◢ ◤ ◥ ► ◄ ▲ ▼ ■ □ ☐ ▭ ⊴ ⊵ ⊲ ▻ ◅ ⊳ † ✧◈
↑ ↓ → ← ↗ ↙ ↖ ↘ ↯ ▬ – — ‼ ¡ ‽ ¶ ╢ § ∟ ʹ ⁻ ╯ | ⌂ ¢ ¥ ₧ ƒ α Γ σ ¬ 0 ‡ ↕ † ∩ ∫ Φ ª
♥ ♦ ♣ ♠ ✫ ★ ☆ ✳ ✶ ✱ ✽ ¤ × ○ ● ◙ ◘ ♂ ♀ ☼ ☞ ☢ ☺☻ ☃ ☠ ☯·☮ ☂ Θ 〄 º ∞ Þ þ ♡
˄ ˅ ˃ ˂ Λ ^ ∴ ∧ ∨ √ ✓ ✔ ☑ « » ≠ ∂ Ψ ψ ∏ Π π ∑ Σ ∈ ε ∋ ∃ η ł Ð ℝ ± ✡ ° " " " "
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