Help date and restore mystery hand-coloured photograph

[Flickgirl]

I have a set of 19th/20th century photographs that belonged to my great grandmother and amongst them is this coloured-in photograph by "John M Hutton, Artist, 10 Bridget Street, Glasgow".

According to this website John M Hutton was at 10 Bridge Street between 1860 and 1874:

http://www.thelows.madasafish.com/cards/huttonj_10.htm

It would be great if anyone could help me narrow the date down any further.  I think 1860s due to clothing but expert opinions greatly appreciated.

I would also be grateful for any restores - here's a link to an uncompressed version:

https://dl.dropboxusercontent.com/u/1693306/Unknown%20Woman%201860-74.jpg 

Thanks very much.

[Seoras]

I would take a stab at mid to late 1860's, that's my guess.

[Handypandy]

I've had a play with it. Unfortunately most of any usable detail is already lost...

[Flickgirl]

I would take a stab at mid to late 1860's, that's my guess.

Thanks Seoras; that's in line with my thinking too.  My best guess is she is my great great grandmother who died in 1873 when she was 42.

[Flickgirl]

I've had a play with it. Unfortunately most of any usable detail is already lost...

Thanks Handypandy - I'm not surprised most of the usable detail is lost!  That's a really great effort.  Thank you for trying.

[Greywolf907]

Try this...less is more!

[loord74]

Just quick enhancement

[loord74]

Only Clean up

[Flickgirl]

Thanks greywolf907 and Loord74 - excellent restores