Wt1,
Thanks for the picture! I haven't seen a Lepage spreader in years. It brought back a lot of childhood memories.
On a more practical note, for those of you who haven't seen a mucilage glued stamp, if you see amber/brown "glue" on an older collection, most likely it is mucilage.
The stamps can usually be soaked off. For the real stubborn ones I use "Bestine." It is a solvent that is commonly used to remove glue. (N-Heptane is the active ingredient). It works well on self-adhesives too.
Dan
