Diamond T skillet?

[Mike Bohannon]

Here is different diamond skillet (diamond with a T).  It is marked 8 on the bottom but is slightly smaller than a 7 large block Gris.  No markings on the top.  The inside is finished smooth.   Any info? Mike

[Steve_Stephens]

Isn't there a trivet that has a large "T" inside a diamond and the trivet is diamond shaped?  It could be the same maker.

Steve