Here is a micro bobbin that has the initials of "DRT", "DPT", "DHT" or "DFT" on it. Does anyone know who that is or what company that is? Perhaps when it was made etc. Any information appreciated. I just crossed paths with it and acquired same. Thank you in advance.
Mark

The bobbin with the spool is a Matarelli. I simply used that as a size comparison in the photo. It's the one below the FM that I am interested in.

Looked on my tying bench, it’s definitely a DH Thompson, I’ve had mine for many years and still use it for silk.