Symbol meaning
 

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

Roger this would indicate the barrels are Twist.

See below as taken from TPS for barrel steel markings.

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 --

Attachment 97714

For Vulcan Steel the marking is a Kf --

Attachment 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.