I found a parkerized 870 with a 20" barrel but it does not have "Police" anywhere on it. When they first started producing these did they say "Police" on the receiver? It is not an express model as it has the polished black bolt. Is this a factory magazine tube extension? (Note that it extends past the barrel about an inch or so.) I borrowed this picture from Shotgunworld as this is the only one I have found like it so far. Looks exactly like this without the word "Police". Serial number is W6112**M. It is missing the front sling swivel stud. If this is an early police model is it worth $300 + tax? Thanks for any and all info! WFR Wanna kill these ads? We can help!