Mystery Tool; What is It.

[aussiblue]

I rather speculatively brought this grab bag of mainly Litchfield tools on ebay; this lot https://www.ebay.com.au/itm/185614146935. OK; so perhaps I have a car tool fetish. But I do think I did OK . This Collet tool https://fordspecialtools.service-sol...search=204-158 is both likely to be useful to me and is seemingly somewhat expensive. I also got a lot of BTR/ION transmission service tools ( and mostly not ones I already had) and various Ford I6 engine tools. Also a few Mazda 3 transmission service tools (49 F401 366 and two of the support plates that go with it).

I also got every special tool you need to remove and install the valves on a Ford UA Corsair (the Ford rebadged Nissan Pintara; remembers them?). I'm not likely to ever see one of them again, let alone have to do a valve job on one, but I guess they are fairly generic valve removal and installation tools so the may find a use. There is only one tool I was not able to ID. This one in the attached picture. Anyone know what is is please? It appears clean and unused and has "Pg3" or perhaps it's "P93" crudely scratched on one side.