The Pennsy had over 100 ten wheelers and needed a more powerful model for commuter trains with their many stations and tight schedules. Used mostly for commuter trains with many quick starts and stops, they operated on track where heavier engines were prohibited. They were built with super heaters, power reverse gear and were hand fired - never receiving stokers.
About product and suppliers:
Alibaba.com offers 1 g sacle model products.
There are 1 g sacle model suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of g sacle model respectively.
G sacle model products are most popular in Western Europe, Oceania, and North America.