Yes, it is. Days of the 10 a.m. Flying Scotsman and (as I recall) the 4 p.m. Talisman
And not only - I found the 1964 list of named trains with very similar timings, and with The Talisman also leaving at 8 a.m. and The Heart of Midlothian at 1:30 p.m.. Both of those called also at Berwick-upon-Tweed and Darlington, and THoM at York too. They are all still visible, if unnamed, in 1971.
Train | Edinburgh (dep) | Newcastle (arr) | Kings Cross (arr) |
The Talisman | 8:00 | 10:00 | 14:15 |
The Flying Scotsman | 10:00 | 11:55 | 16:00 |
The Heart of Midlothian | 13:30 | 15:33 | 20:10 |
The Talisman | 16:00 | 17:55 | 22:00 |
And then there was The North Briton (starting from Glasgow Queen Street, ending in Leeds), and one of the sleepers was The Night Scotsman.