[TR] What do you think is painted on the side of TSF52E block?

[Don Hiscock]

Like most all sidescreen TRs, my TR3B TSF202L had hand-painted orange
letterng on the starter side of the block reminding everyone the
engine was built for a TR3.  The car was built on April 12, 1962, some
months after TR4 production had begun.  It has a perfectly standard
TR3 engine, TSF52E, but with the full-synchro gearbox common to the
TSF series.

Did TR4s also have orange paint on the block?  Does anyone else think
that the painting on my block looks almost like it had something else
beneath the "TR", alongside the "3"?

http://www.smugmug.com/photos/i-xqwkjzw/0/XL/i-xqwkjzw-XL.jpg

Don Hiscock
Saint Louis