boycbronco

20.3.1. Try to be friendly when voting or commenting. As for everyone involved in the submission process, abuse is not acceptable. Go easy on new users or users having genuine difficulties. A 'please' or 'thank you' goes a long way to making communication easier, and criticism more palatable.

https://www.discogs.com/help/formatslist

5.2.a. Barcodes can be sourced from both the barcode text (the numbers printed below the barcode) or by reading the barcode itself with a barcode scanner. If there is a discrepancy between these two sources, both barcode variations can be entered into separate barcode fields.

5.2.j. ASIN is the Amazon Standard Identification Number. This is a unique identification number assigned by Amazon.com and its partners for product identification within the Amazon.com organization. Please provide submission notes that point to the relevant release on Amazon. This number should only be applied to releases manufactured by Amazon (CD-Rs), physical releases exclusive to Amazon, and digital files sold by Amazon.

Track times: 12.6.5. When the printed durations do not match the actual durations and the difference is more than ±5 seconds, enter the actual durations and list the printed durations in the Release Notes. When the difference is less than ±5 seconds, enter the printed durations.

Usually, the human readable code will include spaces, dashes, or other characters. These characters only serve to make the barcode easier to read, they are not necessary for computers to parse. Ultimately, the barcode can be entered both ways on the same release, please do not delete one version in favor of the other. When entering as-on-release text barcodes, please add all characters present.

The 'Description' field can be used to indicate the source of the barcode, for example "Text" (the numbers printed below the barcode) and "Scanned" (when using a barcode scanner to read the code). In the case of multiple barcodes on a release, they can all be entered in separate barcode fields - please use the 'Description' field to provide any further information, if possible.

Runout etchings https://www.discogs.com/help/forums/topic/88979

Plants that mfg'd for Polygram:
Starting in the mid-1970s and continuing into the late 1980's, the center labels of US PolyGram sublabels began showing two-digit number ID codes signifying from which pressing plant the record originated. A partial list of confirmed plants and their corresponding numbers are as follows:
6 = All Disc Records, Inc.
16 = Sonic Recording Products, Inc. (pre-ca. 1975), Goldisc Recording Products, Inc. (1975 to ca. 1983), Electrosound Group Midwest, Inc. (post-ca. 1983)
18 = Presswell
19 = Bestway Products Inc.
22 = Allied Record Company
24 = Monarch Record Mfg. Co.
25 = Columbia Records Pressing Plant, Santa Maria
26 = PRC Recording Company, Compton, CA
49 = Specialty Records Corporation
53 = Keel Mfg. Corp. (pre-1981), Hauppauge Record Manufacturing Ltd. (post-1981)
54 = Shelley Products
56 = Columbia Records Pressing Plant, Pitman
57 = Columbia Records Pressing Plant, Carrollton, GA (post-1981)
60 = Sound Makers
70 = RCA Records Pressing Plant, Indianapolis
72 = PRC Recording Company, Richmond, IN (post-Dec. 1972)
73 = Columbia Records Pressing Plant, Terre Haute
76 = Hub-Servall Record Mfg. Corp. (post-1970)
There are some numeral codes which have so far been unconfirmed as to their corresponding pressing plants, including 30 (either Plastic Products or Peter Pan Industries) and 75 (presumably MCA Pressing Plant, Pinckneyville); plus other manufacturing codes (i.e. for cassettes) including 12 and 35.
Sleeves:
From the site:
0704 - AGI (Album Graphics Inc.)
0501 - SH1 (Shorewood Packaging)
206 - Weyerhaeuser Company (or whomever was the licensee at time)

https://www.ifpi.org/content/library/sid-code-implementation-guide.pdf

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

http://wiki.musik-sammler.de/index.php?title=Herstellungsland_(CDs_/_DVDs)

https://www.crimson-ceremony.net/pr3/mf/odlist.php

http://www.tapeheads.net/forums.php

Olyphant sequences and dates: https://www.discogs.com/forum/thread/699750#7296812

DADC/Sony DADC USA manufacturing codes/identifiers: https://www.discogs.com/forum/thread/979096

Text formatting: https://support.discogs.com/hc/en-us/articles/360007331734-How-Can-I-Format-Text-

Epic labels: http://www.cvinyl.com/labelguides/epic.php

Packaging etc: https://reference.discogs.com/wiki/packaging