I recently acquired a very nice model which appears to be a Coles Corliss engine. I believe it is about 50 years old but is in excellent condition. I was hoping someone here could point me to some additional information on this model such as what year did Coles introduce this model. Is it a model of a specific Corliss engine? If not what would be the correct historic period? Also what scale is the model. It looks identical to the one on the cover of the number 22 Coles Power Models Catalog. Looks like Coles is out of business, can you still get a copy of the plans or drawings?