I believe it is a Printer's Specimen stamp from Switzerland
Your right Dakota. Have a look here: https://www.stampprinters.info/WIFAG.pdf (Modified by Moderator on 2021-03-14 06:04:21)
Swiss Trial prints. More information : https://swiss-philately.co.uk/wp-content/uploads/2017/03/Swiss_Trial_Prints.compressed.pdf Mod. Fixed link.(Modified by Moderator on 2021-03-14 06:05:09)
I find it odd that they would feature a Mayan calendar.
Wonderful information. Much appreciated. Dan C.
Thanks to all. great info! Marios