Transformer type identification
If I wanted a transformer for a flyback converter, I'd probably go the Premier magnetics and they make dozens (possibly hundreds) and they are all different and look generally like these: -

The one on the left looks similar to yours but, it's a semi-custom made device with different winding ratios and different thicknesses of copper wire to suit a specific application such as these: -

And, if you clicked on the top link (DC to DC converters) you'd find a PDF document that lists about 50 variants.
If you clicked on the 2nd link (Off-line power converters) there are 8 sub-PDF documents listing designs numbering into the hundreds I would say so, there's no chance that your transformer can be recognized for what it is on this basis because: -
$$\boxed{\text{It's a custom made transformer for a specific customer}}$$
Even if you measured the inductances and wire resistances and recognized the polarity inversions between the individual coils you would still not know what maximum current to drive the primary with because the ferrite material would be largely unknown and also the operating frequency. You could take a stab at things and you might get lucky. Or, you do the sensible thing when wanting to make a flyback or forward converter and, that sensible thing is: -
$$\boxed{\text{Design it yourself}}$$
Throw away those transformers because they're worth absolutely nothing to nobody.