I recently purchased a PPK/L with a serial number 502XXX, which makes it early 1956. My question is, did the PPK/L have a stainless steel slide with black "rap-around" grips. I paid about the normal price for a good regular PPK, and I know the PPK/L were made in far less quantities and command a much higher price. Did I buy a fake? Sorry, I can not provide pictures at this time. Thoughts?