Symbol meaning

[Roger Townson]

On my 1888 Parker, next to the barrel lugs, is the symbol of an upper and lower crescent with an upper case T. What is this designation? I have looked in everything I can find and do not see it.

New member, very first post.

Roger Townson

[Randy G Roberts]

Roger this would indicate the barrels are Twist.

[Randy G Roberts]

See below as taken from TPS for barrel steel markings.

[Dave Noreen]

That listing from The Parker Story doesn't include the marks found in the barrel material location on the right barrel flat of the early Vulcan Steel, Titanic Steel and even a few Acme Steel barrels. On the Titanic and even a few Acme Steel barrels the mark is a K --

97714

For Vulcan Steel the marking is a Kf --

97715

These marks were in use up into the 134xxx range. By the 135xxx range we begin seeing the T, A, and V in a circle.