As Roger says, difficult to tell whether Officer or OR. The image of the back is very blurred but from what I am deducing, it appears to be a closed-back spun manufacture and if so, this is associated with Officer quality.
The manufacturer is contemporary with 1850/1860 period, so it ties in with the 1855 uniform change. You may browse the button maker and possibly come up with a time range. thereby further confirming date of button. Squire illustrates an identical button and captions it as OR's brass, 1855. You are in a better position, however, to confirm the metal and quality.
As with all collectables, a collector specialising in the unit would find it more desirable.
GTB
|