Depends what you are looking for, theThese are extremely hard to find and nonexistent for some units. Does anyone have any to share?
Yes, as the OP says this is a difficult thing to find - esp from periods like 60s/70s/80s and no doubt before - even those pics, for example, are from late (or maybe even) post NSE - with the strip lights and the compartments taken out for example - so late in the units life.
The images show the blue NSE moquette seat covering. To get a feel of the original, you would need to see the carriage in Bournemouth Blue (green/blue check). The much lamented 4-CIG's with their comfortable 4 a side seating looked very good in this.