Johnsimpson

I just purchased a magnificent pair of la scalas...LS BL..that I found at a resale store...wow...how lucky was that...have questions about powering these...here is what I have available...Yamaha htr 6090.. Yamaha rx v663....pioneer elite sc05... Fisher rs 270...no tube amps available...not sure what kind of power these can handle and I am in a small room...15x10...also would like to know if someone can help me out on the year model of these...serial #s are 185518...185519....any thoughts and help would be appreciated...I will add pics if I can figure it out...thanks