Hallmark help

I checked the online sources and Barton Wrights book. No luck. I can’t tell if it is JL or a funny T. This was in my mom’s stuff and she would have purchased it 1970s or 1980s at a tag sale of some sort. Any guesses?

Tommy Singer had lots of different marks? Couldn’t find something that matched, good luck.

on ebay now and was posted feb of last year as well::

from my collection;

Attributed as Singer from an online offering to whom I have:submitted an inquiry:

From yet another online item going as Singer (not the same one as first picture)

and also from my collection, with the T more similar to the one in question than his more recent, possibly linking them all together with your mom’s piece:

So how does one actually get a verification on a hallmark like this?