I believe this and several other similar blends by Larsen have been discontinued due to lack of interest.Several on-line sellers have been discounting their remaining stock to get rid of it.I don't think it's a tobacco worth cellaring.
Mr. Larsen passed away in 2003 or 2004 and the family decided to close the shop in 2005. I think Stokkebye now owns the blend formulas and is continuing to produce some of the blends. As for the value of the tins you have, this may help-- Iwan Ries Larsen tobacco