I just picked up a keg of Rodenbach Grand Cru which came in a keg from palm brewing. I have found online various places saying that Rodenbach kegs take the M coupler, but that Palm kegs require an A coupler. I have a coupler from Micromatic that reads Krombacher on the handle which also requires an A coupler, but looking at the coupler it appears to have the probe design of the M coupler. I cannot find any further information on the Krombacher coupler that I have and was wondering if anyone could help me out. Should I try and tap the keg with the coupler that I have? If the coupler is wrong what will happen? Thanks in advance.
Coupler with handle down https://drive.google.com/file/d/0B8ECp8DG7h_rbldXaVd4TkI5ckk/edit?usp=sharing Coupler with handle up https://drive.google.com/file/d/0B8ECp8DG7h_rblcycXlFV2xfZ00/edit?usp=sharing Coupler overview: https://drive.google.com/file/d/0B8ECp8DG7h_rbWhuX3JlUWtqY0E/edit?usp=sharing Top of keg: https://drive.google.com/file/d/0B8ECp8DG7h_rcks2TTYyekVxUFU/edit?usp=sharing I should note that the marks on the top of the keg that appear in the shape of the A style coupler appear to be scuff marks or something and don't seem to actually do anything or correspond to anything. Almost as if someone tried to force an A style coupler onto the keg at some point.