Is anyone able to say with certainty what movement this is? Maker, model number etc ...

[UNiCOM]

 

[Deep]

Looks like a Seagull ST25

 

[UNiCOM]

Looks like a Seagull ST25

If you mean a Seagull ST2555, no the date wheel is quite different. This is an ST2555 (as advertised on AliExpress)

 

[kramerica72]

Agreed, Seagull ST25

 

[UNiCOM]

Agreed, Seagull ST25

Taken just now from another advertisment for an ST25, What do reckon this is then? (the date wheel ring is quite different to the one I asked about)

 

[UNiCOM]

Taken just now from another advertisment for an ST25, What do reckon this is then? (the date wheel ring is quite different to the one I asked about)

 

[Deep]

There are multiple variants of the ST25 movement, here is an example with a date wheel closer to yours.

 

[UNiCOM]

There are multiple variants of the ST25 movement, here is an example with a date wheel closer to yours.

Cheers for that, much appreciated ... Though it's just added to the confusion really as BOTH examples are listed as being 'Seagull ST2555' when clearly their top sides differ considerably ! lol