My name is Alan and I am a Personal Property Appraiser specializing in Fine Art & Antiques. Using my resources to look into your inquiry, I was able to find that your Tapestry has a current market value of about $5 USD at auction or in a private sale. I found a similar piece from the same company with the same markings and it did not even sell for $5. Here is the Link
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Alan C. Ransdell, ISA AM, AOA AM, CA
Hello, I am sorry but I am unable to find any company history for P & C. I will now Opt Out. Hopefully another expert will be able to help you. Best of Luck!