Springbank 12 YO Rum Wood Expression
According to the Springbank Distillery - the Springbank 12 year old rum wood expression was imported to the US when it was released in 2003/04. It was limited to 5700 bottles and sold through very quickly. Springbank Distillery won't place a value on any of their products higher than the retail value which was around the £40 mark, for a good example of the price collectors are willing to pay, they suggest to take a look at whiskyauction.com.
We also suggest you send your photos to Martin at Bonham's - keeping in mind a very small fee may be involved. You can contact Martin through email: Martin.Green (at) Bonhams.com Another idea for a way to find a value is to take a look at E-Bay.
Hope this helps!