Not sure how long it was there. The Doe Network, the description there says following.
"The victim's skeletal remains had been wrapped in a rug and concealed under a layer of relatively fresh concrete, which itself was hidden behind an old coal-burning furnace in the basement of a rundown, mostly abandoned apartment building on West 46th Street in Hell's Kitchen on Manhattan's West Side."
I do note they say wrapped, and not rolled. They describe the concrete as "relatively fresh" I ....admit to knowing very little about this, how do you even tell? is it different color from the rest? Is it less cracked ? Less mold? Softer?
Personally I am putting the time-frame somewhere around 1968/1969 (coin is reported as two differnet years by different sources) towards, late 70's. Because I just, don't think people would keep and fit in an item of clothing for that long a time.
The image of the tag on doe network indicates it is a jacket/coat tag? I think
@taramarie posted an image earlier. I can not seem to find any other images reflecting this outside what was in that clip, and this here from doenetwork.
View attachment 364654
Found a site that talks about Registered Identification Numbers (possibly Taramarie posted this as well and I was too sleepy to notice)
Stamp of approval | Vintage Clothing | The Collector's Companion | Your guide to antiques, vintage & collectables shops, fairs & auctions
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Registered Identification Numbers
In the US manufacturers can apply for an identification number for their garments. I believe it is an alternative to using a manufacturer’s label.
WPL numbers were issued between 1941 and 1959 under the Wool Products Labeling Act. The number will be WPL followed by 5 digits. The numbers issued were 00101 to 13669.
RN numbers will be RN followed by 5 or 6 digits.
RN numbers were issued from 1952 and 1959 by the Fur Products Labeling Act. The numbers 00101-04086 were issued during this period.
Following the adoption of the Wool Act,Fur Act and the Textile Fiber Produacts Identification Act In 1959 the numbering stopped and restarted again at 13670.
At the time of writing (July 2021) the numbering appears to have reached 165260 judging by a quick search on the RN Database (
TextileRN - Basic Search)
To help you with rough dating, it is considered that an average of 2635 numbers were issued per year. Like other systems, this will tell you the earliest possible date, but not the latest as once issued they could be kept and used for a long period of time."