Black Watch sporran change?

[blackwatch70]

To narrow down the date of the Ebay photo, I wonder about four things:

1) what date was the sporran badge moved from a shield on the hair to the cantle itself?

2) what date did the piping move from the top of the collar to the base?

3) what date were collar badges adopted?

4) what date was the piping removed from the epaulettes?

With those big Crimean beards it's often impossible to see the collar!

Apparently numerous changes in uniform of 42nd Reg of Foot occurred in 1868-1870.

OR's sporran cantle was changed in 1870.
Same year the white piping round the top of the collar was changed to the base of the collar and whiite metal collar badges introduced.

Old Forage cap was replaced by th Glengarry bonnet at about this time also (interesting, the glengarry was issued in 1868, but does not appear in photographs until 1870).

About 1870 Officer's Levee Dress Sporran changed to 5 gold bullion tassels on looped gold cords, the sporran top was changed to brass etc. etc...

The information was taken from the series of articles about Black Watch uniforms, written by P.D.Clendenin for the Dispatch magazine (mid of 1970s).