Based on some googling, it may be a T61 trim. Notice that the serial number starts with T61.
If that is the case, if you measure the inlet diameter, it would be around 61mm.
Appears to be an SSauto turbo, copy of a master power turbo.
Many of the copy cat turbos will use the exducer size in their name to make it appear larger than what is.
For example, the Super T70, has a 61mm inducer, and a 70mm exducer (which is where the name comes from).
You have to take off the front cover, then use a caliper to measure the small part of the compressor wheel (inducer), then the large part of the compressor wheel (exducer).