Release series or Label imprint? (multiple Rs with same barcode)

There is a Release series.
Of Releases (13 so far) with the same bar code.

All available back and medium coverart, and national library db entry, for these Releases shows notation of SRXX or SRX, where X forms distinguishing numbers.

I’m wondering what benefits there are in treating these as a Release series, rather than as releases by a (as yet un-entered) Label called SR.

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I opted for this unique barcode release series instead of a label because I found no evidence of a record company or even an imprint which would deserve to be called a label (as I understand the guidelines). However I am fine if you like to account for this, both concepts may coexist very well, won’t they?