Sterling 14 ½” long chain (5.8mm wide) with round and hour glass shaped
links with T-Bar end and weighs .87 oz..
Straight chains are the most elementary of the pocket watch chains, as they
don't have the additional "arms" or "drops" characteristic of the Albert or
Double Albert chains. Although available in different lengths, the chains are
meant to be worn draped as opposed to pulled taught.
The t-bar, made to be passed through a buttonhole, is the earliest form of
connection between the pocket watch chain and the wearer's vest or shirt; it
predated the spring ring and various clips used afterwards.
Fancy or ornate t-bars tend to be worn from the inside-out (to make visible and
display the t-bars, as shown below); standard t-bars are usually worn outside-in
(so they aren't visible).