I can at least tell you what was physically on the telly anyway.
The Xmas decoration is a red reindeer with a wicker sleigh filled with baubles. It used to belong to my gran. We still have it in our family to this day, and it gets put out on display each Xmas.
Our groovy fibre-optic light wasn't part of the Xmas decor, it was just one of the everyday house items. It was very modern at the time of course, but now it looks quite kitsch!
We were on our 2nd colour tv by '73 but I haven't got a clue what programme is on in the picture. Wouldn't mind knowing after all these decades. Anybody think they know what it could be?
To help you drag your mind back to that era, underneath the photo is the tv listing for Sunday 16th December 1973. It's from the Sunday Post. You may need to click onto the image to read the larger version.
No 24 hour tv back then, BBC 2 not starting till middle of the afternoon!
There are quite a few of these shows on Youtube. For example you can relive the intro to Elephant Boy...(KALAAAA!!)... or catch Barbara Streisand singing a song from her show.
One programme which would be of interest to many Dundonians that day was Scotsport. This hour & a half edition featured highlights from the Scottish League Cup final - Dundee winning the trophy beating Celtic 1-0.
Not only was I at this game, I now have some footage from that very edition of Scotsport in my own personal collection!