What you have here is a very early Scottish communion token. It is made of lead, as most early communion tokens were. "KABC" stands for "Abercorn Kirk". This is a "first generation" token, from the 1600s or 1700s. Later tokens tended to be more elaborate, with Bible verses on them and more clearly naming the church and/or the minister who distributed the tokens.
It is token number 5, illustration number 4 in the book "COMMUNION TOKENS OF THE ESTABLISHED CHURCH OF SCOTLAND - SIXTEENTH, SEVENTEENTH, AND EIGHTEENTH CENTURIES" by Alexander J. S. Brook, a very old book (1907) now in the public domain so you can download it from the web from numerous sources, such as here:
http://journals.socantscot.org/inde...d/7095/7064/Scroll down to the "illustrations" section (page 101 of the download, page 553 of the original publication) and look at the fourth picture; it is an exact match for your token: KABC monogram within four stars.
I found it by Googling "KABC monogram lead token".
If you're unfamiliar with the concept of the communion token, the book has some introductory paragraphs describing their use. But basically, they were tickets of entry for Church of Scotland (Presbyterian) communion services. The Presbyterian Church traditionally hold communion either monthly or four times per year, and is traditionally a "closed communion" church; only those deemed worthy may partake. In the week before the communion service, the minister would interview you, to ensure you were worthy. If satisfied, he would give you a token. The tokens would then be collected on entry to the communion service, which was held separately to the regular church service; nobody without a token would be allowed in.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis