Providing advice on the valuation of a Rosenstengel piece here is somewhat fraught with danger but I will try to provide some general guidance that will hopefully prove useful to some degree. Be aware that prices realised do move over time and are dependent on all sorts of external influences. Currently (2016) the value of period and antique furniture in general has dropped significantly over the last 10+ years as modern lighter interiors have become more fashionable. This seems to be a global rather than local (Australian) trend. In terms of valuation though, in my experience , there are a fairly simple set of rules that can be applied to assist in determining the value of a Rosenstengel piece.
It is difficult of course to provide accurate guidance here, however the notes above should serve as a general guide. If you have something you would like more detailed guidance on then feel free to drop me a line via the contact page. I’ll try my best to help where I can.
One final point in regard to valuation; you should understand the retail trade is quite different to the wholesale or private market in relation to the pricing of any goods including period items and antiques. For this reason you should not expect to achieve $1000 for a wardrobe because you’ve seen a similar item in an antique shop with that as the asking price. From the customer’s point of view, the effort required to respond to private advertisements for pieces that are at times incorrectly described warrants a discount when compared to the ease of shopping in the air conditioned comfort at an antique retail outlet. It should be recognised also that Antique shops carry significant overheads to operate; they incur costs to locate the pieces they offer to the public, collect and transport the item to the shop, repair and repolish the item to make it suitable for sale, carry the stock on the floor for many months, negotiate a sale price which can be a significant discount to the marked price depending how long the product has been awaiting sale and finally transport the purchased article to the buyer. For these reasons you should generally not expect to achieve anything more than 50% of the retail price for the private sale of an antique item and Rosenstengel furniture is no different. A private selling price of between 30% and 50% of the retail price seems to be considered standard within the industry from my experience.