Lots of information on the Dr. Grabow lines but no much on the Linkman pipes that apparently preceded them. This is a dainty little Linkman Fifty Grand that appears to be a style from the 30 or 40s. Any experts that want to weigh in ?
I edited your post hoppes. You may check the below link for more information about picture posting:
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I'm not sure offhand when it was introduced, but the Fifty Grand was available at least from 1933-43. The retail price was $0.50 but it was often discounted a bit.